Which Stick Set?
 

I am currently using the 2.4ghz Acoms wheel set, but think i will go back to sticks.

My Choices are the new core 2.4 ghz system http://www.racing-cars.com/pp/Manufa..._RC/CR138.html

or

a second hand 40mhz KO Vantage Esprit 2, which for some reason keeps appealing to me, but feels like it may be a step back.

Any comments?

For info it will be run with a Losi Brushless setup in a B4 and D4 both running Lipo

Vantage II is a nice tranny tbh, but you're stuck with 40mhz unless you convert it yourself or get one already done on spectrum.

I love the 3VCS which I just got, but 2.4ghz versions seem pricey compared to what you can get from Core

That new Core system is a great piece of kit.