G'day mate! Just get a Thunder Tiger Pro 46, its tried and tested and it lasts as long as you don't abuse with it. Tuning her is easy as she is not all that fussy. The OS 46AX is nice too but costs a little more. On a cheaper note, the ASP46 or 52 is a good engine and here its 35% cheaper than a TT46. Used her and she is sweet.