I used a loop-master A/B with my badcat a while back. It did everything I needed it to do - no pops, had LED's to show which channel I was on, and it was built like a tank - very, very reasonably priced, built-to-order, and it arrived very quickly.
Simple PepTone ABY box for now. Though now I need something with a phase switch since my Twin Reverb is always out of phase. Also need a Stereo Jack in with Mono Jacks out so I can play my Ric through both pickups. Will most likely need to get something custom since I don't know what my options are. Anyone care to help point me towards somewhere?
Check out Lehle switchers. It will make a huge difference.
I use a Lehle P-Split II, as I run both amp all the time and don't need the switching capabilities. I was using a Morley ABY and borrowed my band mate's Lehle Dual SGoS one day at rehearsal and the difference was night and day. I ordered the P-Split the next day.