I've been using my BR600 for awhile now. Great machine, but I'm not a fan of any of the built in amp models. Yes, they're tweakable but I'd rather search for a better alternative. I'm kinda a "plug and play" guy, so I'm not up on the latest devices out there. Are there any cool units that I can plug my guitar and bass into and have the option of choosing multiple amp/cab models that have great tone, which I can plug into the BR600?