I am super impressed with the Speed Passion GT2.0 (both PRO and LPF).
I find them smoother and more adjustable than the LRP / Nosram units they replaced, are considerably cheaper.
As they have plug in switch, reciever & fan wires they are easier to swap between cars if you have to and also easier to repair yourself if you damage a cable.
I find the handheld programer much easier to use than looking at LEDs and trying to push tiny buttons on the ESC itself too.
Well worth a look especially as the LPF version (perfect for 2wd but was happy running a 5.5 in my 4wd too) is available for under £114 @ Microtech
