I guess the first thing to consider is are you building a BIG street motor or a all out race motor. Over and above the brand name I would be looking for forged pistons as these WILL take the abuse over cast ones. As for the barrels, Mahle makes very good products and for a street engine I would not shy away from them or their pistons either.(as a side note Mahle Brazil now makes most of Caterpillar's pistons) for racing when you don't need the cooling fins on the barrels LA Sleeve would be my preference as there IS no better. So to answer your questions by line item.
AA pistons... this is a company I haven't heard of. this doesn't mean that they are no good but remember there are only about one or two quality piston foundries still in the US and even they are sourcing to other countries for product. I would check to see if they aren't really Mahle or Wiseco. Mahle Pistons...As I stated I'd buy these for street any day and I think you would have good luck racing them also. Jaycee pistons...I have been to their site and I don't think they make their own pistons... great carbs and other products but no pistons. I would check to see if they aren't Wiseco that they have clearanced to their specs. Olspeed
66 Ghia, "Dexter" 76 flat window Beetle
It's not a Car it's a VolksWagon!