I'm currently using a GK 800RB, and I want to beef it up a bit. I have a GK Goldline 4X10 and 1X15. I was looking at the GK Fusion 1050, which would give me a little more wattage and a bit of tube character, but it's so damn expensive I was wondering if there's another option? I'd like to stick with GK, but I'm open to other brands. I just want to maintain my punchy, upfront tone. I am not a pocket bassist. Maintaining attack and heaviness are important to me, as well as sounding good with a lot of effects. Thoughts?