"Blinky" ESC advice

[wozza]

Hi. Can anyone out there help me with my speedo choice?. I am planning to run my TC in this years Clubman Championship, with a "blinky" ESC, and my 17.5. I already have a Nosram Power Reverse 90150, but i have the chance to buy a Losi 9500 at the right price. has anyone had experience with both these ESCs in a TC, and can advise whether i would be better having the Losi's programmable curves, or to carry on using my Nosram, with it's marginal constant current advantage?, Thanks,
Wozza.