I play in a loud punk rock-n-roll band, I currently use a Eden 410XLT (98lbs) and love it but now have disc issues in my back so need to go lighter for the next tour. I want volume and low end more than anything, but don't mind some decent punch in the mids...I play fast, with my fingers and use a Fender Jazz bass with passive pickups. I generally turn the treble and high end down and don't use horns. I use a GK MB500 head, I plan to run at 4ohms (500 watts). Most of all I'm concerned with volume, I'm up against 2 guitars, one goes through a 412, the other through a 410...both use 50 watt heads. On the last tour I ran my GK at about 1-2 o'çlock gain most nights, I won't always have PA support. We are fairly loud. Small clubs/bars mostly but the odd decent sized room. 104HF - in my mind the best option, close to the Eden but 65lbs, front dual ports, I'm thinking this will be loudest and best bottom end but some people say port locations are irrelevant. 104HR - 10 lbs lighter, rear ported, probably less volume (?) and less low end, main benefit will be the weight? GK Neo 410 - 68lbs, comes with casters, I use a GK MB500 and it will probably go well together, front single bottom port. Plus the cheapest. I tour alot but don't know gear that well...please give me some feedback and or advice, thanks in advance.