Jenvey's or RB's.

[7 wonders of the world]

If your looking to maximise your return when you sell then RB's, as CC get pedantic over upgrades.

However if your looking to enjoy the car whilst you own it then Jenvey's, there design offers better light and mid throttle transition and the peak power if any is negligible. consider just how long you are eve on peak power compared to the time spent on light and mid throttle.

RB's are a neat packaging solution however the vast majority of the tuning companies and race and rally team use butterflies for a good reason.

The money you save will permit you to change cams etc to and unleash more ponies for your enjoyment.

 

[21jigsaw]

Some years ago I did a back to back on throttle body and  Roller barrels on K Series 1800. Same engine, management system etc. At full load 7bhp in favor of the throttle body. I didn't compare the drivability / part load / torque characteristic of  the two.

[nonturbo]

F225 (230 BHP from my old 420) upgrade from Premier power.

Or if price is really not important the F265 upgrade......hmmmmmmm