I have been running Alpha SS for 6 years. They have been good to me, I 've only had one drive break in about 300 hours, broke two teeth off a stock upper gear. I have had the gears replaced with the HD set in two of them, and the third (spare)is going in to have them done soon. Everyone says not to air them out but, with the short SS lower even when not trimmed fully it is hard to keep the prop totaly in the water at all times. I have to admit I fly my boat quite often and as long as you are quick on the throttles, run a drive shower and synthetic oil and not much over 350 HP you should have no problems. SS is N/A as a counter rotating drive. IMO the bad rap is undeserved, it's good for the buyer and bad for the seller.