depends on the budget.. I recommend a SMC...shit, its the same thing as AFC but without the screen. But, i will answer your initial question: if your going to get one, just get the VAFC, its the same as SAFC but cheaper and it has the vtec control. Ive heard good things about greddy and blitz... I would look at their models and your budget...chose what best fits you. do a search on yahoo.com for *insert product name here* review. youll be surprised the info you can find online...... hope i helped.