I'm going to buy a new bass amp head that goes down to 2 ohms besides a Carvin. Been using their stuff since 2007 and way too many reliability issues, I'm done with them. I want to bi-amp, using 2 4 ohm cabs. Interested in the 2001rb Gallien-Kreuger, that's around the price point of something I'm looking for. Got $1500-1700 to spend, what's out there besides GK?