for more reliability,... OS 12TRPT,... I didn't change my con-rod after break-in and it's not having any problemsafter I hit the 2 gallon mark,... still thinking wether to change con-rod or not, hehe.... but TRPT is not a screamer,... more a mid-end monster

STS D5 is good,... (in the price range)

Collari XS is good,....

Novarossi NSR12S5 is good,... but quite pricey,...

planning to try Sirio and newer Collari (XS210)