I put few of my theories here and I'm for Mashburn bcos i don't trust this list.
Also Rosalind's description could be a red herring.
 
But one thing  I really hope is that "Partridge is alive" theory every second post.

I am tired of listening to that story even if is true.

And this idea with Reede Smith and Tyger Tyger tree house gang is disappointing.

Episode 5.7 "If it Bleeds, it Leads"
Jane to Kirkland: "Do I know you?"

Kirkland (shaking Jane's Hand): "No, But I know you!"...

We now know that Kirkland probably knew Jane since before Jane started consulting for the CBI, since homeland security. 

Jane, however, senses that Kirkland is familiar. He's seen him before but can't put his finger on it. Actually, he's seen his identical twin, who's undergone a change in appearance and changed his name to... Walter Mashburn.

Who thinks that Walter Mashburn is Robert Kirkland's twin Brother, aka, Michael Kirkland?

I think it Walter Mashburn. Because he is very good looking. Seems like he can manipulate any woman. He has more money then he knows what to do with. He took a liking to Tereasa and slept with her. He never was uncomfortable with Jane in any way. he always seems like he loves games

OK, it should be obvious now why Kirkland was asking the "fake" suspects if they recognized him.  If one of them was actually red john, they would certainly recognize him since they killed his twin.  So we can now eliminate Partridge and Kirkland.  We can eliminate Reede Smith, Sheriff McAlester, and Bertram.  They are part of this new story line about an inside group that will be an ongoing part of the plot after red john is revealed.  

That leaves just Ray Haffner and Bret Stiles.  Haffner is joining the CBI to help with some kind of investigation on next week's episode.  He is the only one that fits the profile to be red john, unless red john turns out to be someone not on the list of 7.

Also, I've always thought the "he is mar" was going to be "he is married to......", but I just never could put the pieces together.

Did someone notice that moviment with the fingers that both Bob Kirkland and Patrick Jane did?

When BK was torturing Haibach he moved the fingers, and when PJ was been tortured by BK, PJ also did the moviment with the same fingers.
Strange... Was this a red herring or it means something?

I don't like that Reede Smith killed Kirkland... This was bad, but coherent...
I'll keep my guess: Mashburn.

I'm more in the camp that would suggest that Red John isn't on the 'List of Seven' as revealed in the Season 5 Finale. I have no specifc proof to offer, however, he certainly was very well aware that his apartment at CBI had been compromised, and clearly was both expecting this eventuality (otherwise why set the toothpick in the first place), and was unconcerned, if not pleased, that the break in had taken place. This suggests to me that not everything he was guarding as secret was readily available to those breaking in.

Presuming further, that Red John is not, in fact, psychic, and that he's deduced the 'List of Seven' upon surveillance of Jane (even if not from the break in itself), it's reasonable, I think, to presume that the deduction would have been made based upon the information within the room.

That being said, I believe Jane keeps his cards pretty close to the vest, and that his real suspec(s) would not necessarily have been available to be .

Red john told us, through Loreli, that he will now show Jane a trick - that he knows that Jane has whittled down the list of folks with whom he has shaken hands to seven names, and that he will now reveal to Jane that he too knows the names of those folks. The trick is in the naming of the 'List of Seven', in reaching (once again) into Jane's head! not necessarily in confirming that Red John himself is actually on the list. Clearly Red John knows who he is, he doesn't need to solvet that particular mystery.

Additionally, from what I can gather, Bruno Heller has reportedly advised that 'we can trust the list', which we can. I'm not sure he's ever confirmed that Red John is, in fact, on that list.

For my part, I think the list has more to do with Visualize than it does with Red John per sé. Clearly there is a connection between Red John and the cult on some level, but I think the conspiracy that exists among the seven has more to do with the tentacles Visualize has into government, the FBI and The CBI. I believe this is the meeting that was taking place in Bertum's office ('How much does Jane know'), and that Stiles has friends everywhere. this would explains how he sprung Loreli from prison. Once RJ is outed / captured / killed - this will become a central new mystery.

This is the long way of saying I believe that the prime suspect is not on that 'List of Seven', and that the other list - previously seen in Jane's notebook - can also be trusted (perhaps this is in fact the list to which Bruno Heller was referring). On that list was Walter Mashburn, a person with means, style and smarts - Who appeared early within the show and who has feelings for Lisbon (and wouldn't have wanted to harm her if it could be helped).