Biggest challenge I've got with my Omni is keeping the darn thing charged. Its a real pita when I'm spraying down just the protector and half way through I hear the pump getting slower and slower and finally die!
Nice thing about the HF, if the TM is running, I can use it. If its not sucking, I get it fixed.
I like spraying down a nice hot prespray, grooming it and giving it good dwell time.
I can see some benefit of using a battery sprayer, but its 6 of one, half doz of another. Both work.
