I'm a huge fan of the tone from my GBE 600. Love the quick & tight lows with mids that sizzle and grind. But, I want something more portable, lighter. What should I try first? I'm wondering if the Streamliner is too boomy, and if the Shuttle is too modern sounding. ??? Anything 400-600 watts at 4 ohms is plenty for me. I'll be playing my 4-string Jazz (rounds) and P-bass (flats) thru any 2 of the following: Epifani UL-110 Epifani UL-112 Bag End S15-D Anyone who knows the GBE 600 tone have advice for me?