x2 is better, heres why (atleast for me)
pros: instead of doing y2 for memo, you do x2s, which is more ergonomic and comfortable to do
for m1, in y2 bpaul, you do M1 on the UR dial, meanwhile in x2 bpaul, you do m1 on the DL dial
cons:
none
Memo does not matter which one you do, however I do use a different way to memo for Tommy but that was due to switching from bpaul, and with the memo being easy as it is, just do whichever one is easier for you