I currently live run a mike on my cab and a direct from the head using two channels and blend them...I use an SWR SM500. Although the direct from the head sounds fine, I have used Sans amps, rackmount and peddle versions. I love the Sans amp. Sounds great but that too, with blending the two channels (mic&direct) it kinda sounds the same....Anyone have any thought, preferences, advantages, disadvantages etc; that they can throw in??