So I'm thinking about getting one, but have some questions for members actually using it. Here goes, thanks. 1. I'm going to use it with a Budda SD18. Will the amp emulation of the unit "clash" with my amps natural tone? 2. If I decide to just use the unit, do I need something like this? 11 rack - power amp - external speaker cabinet 3. Is is worth it to just use it as an effects processor? Any tips/info would be greatly appreciated as well.