I've been experimenting with a new 3x3 method I came up with recently, and I think it's actually pretty good. I think of it as a Petrus that's less efficient but has better lookahead:
1) 2x2x3 block in DB
2a) Solve the last 2 E-layer edges
2b) EODF
2c) Insert last 2 corners like you would in regular F2L
3) ZBLL (or COLL/EPLL, etc.)
My best time with this method so far is 11.00, and so far my best Ao50 is 16.92. I've had about 5 or so 13-second solves, and a few 12-seconds ones as well. What I like about this is that there's a lot of flexibility. For example, if during the 2x2x3 stage you see a solved F2L pair that isn't a part of the 2x2x3, you can still insert it to make 2a and 2c a bit faster. I also think there's potential for subsets to make the LL better, like using
Winter Variation,
Magic Wondeful,
VLS etc. You could also use
CLS if you get a good case for it.
Plus, I personally really enjoy solving with this method, more than CFOP actually
Here's an example solve:
F2 R' B2 F2 R' U2 L2 B2 F2 U2 R2 B' R' D' U' B D2 F R2 F' R'
z2 F2 U L' B2 D2 F' D L U2 L2 // 2x2x3 (10/10)
F' L' U L // E-layer (4/14)
M' U M U' M' U' M U2 M' U M // EODF (11/25)
U2 L' U L U2 L' U L // Left corner (8/33)
y' U' L' U R' U' L U R // CLS (8/51)
U' R2 F2 R U2 R U2 R' F R U R' U' R' F R2 // G-perm (16/67)
Again, not very efficient but each step after the 2x2x3 is very ergonomic on its own and since look-ahead is pretty easy, you can have a high TPS and have fast solves.[/QUOTE
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