After trying a friend's older headrush model, I took the plunge and got the mx5 and I've been delighted since. Really surprised at the responsive and through sounding tones I can get from this.
I completely replaced my gigging amp and pedalboard setup with this tiny unit and so far has performed fantastically.
I play country and metal and the mx5 really guitars for that twangy tube amp for country and super Hi Gain for metal. Incredibly versatile.
Not only do I run my electric guitars through this, I run my acoustic guitar through it to control my signal and add effects and I've been complimented many times now by other guitarists on the clean, crisp and controlled tone I get. I run my bass guitar through it also for recordings and I'm blown away.
I was able to achieve great tones very quickly. Threw on an amp, few pedals, slightly adjusted and gigged immediately with it. But you can also get into it with complex signal chains, but I'd rather not waste time with all that and just get creating music.
Touch screen is very precise and responsive compared to the older headrush models where you tap on things multiple times for it to register.
The only gripe I have is that the expression pedal is fairly useless. You would think it would have a button to engage it once you press down on the toe but no. Also the travel between the toe and heel is tiny with the effect only really engaging and making any modulation from the toe to only halfway torwards the heel. I would have perferred no expression at all and just have a smaller unit.
But other than that, the unit is fantastic. Really happy with the purchase. Can definitely recommend!