thinking about getting different heads...

i know i'm having a timing issue right now, but i'm thinking of getting different heads...either gt40 x turbo swirl or afr 185's???what do yall think??

I think 185's have issues with stock pistons

Also I see the gt40x and tubro swirl as being in the same class
but
The 185's are kinda the next step or next level

Now the 165's would be closer to being in the same category
although
I believe they are more efficient than either of those other two

Grady