I currently use an old Acoustic 450 amp with an Ampeg 1510HE cab (1 15", 1 10" and a horn). I'm looking for an upgrade for the amp. I've narrowed it down to: High end: SWR 350X Ampeg B5R Hartke 7000 Low end: Ampeg B2R Hartke 3500 I'm leaning towards the SWR because of the Aural Enhancer,SubWave and the overall quality of the rack unit itself. It seems a better deal than the B5R, same price, but I'm more familiar with Ampeg stuff. The Hartke seems like such a deal when you look at the price - bi ampable, lots of poer, etc.. Why is Hartke so much cheaper? On the other side of the spectrum, I'm looking at cheaper heads. If I went with the hartke 3500, I'd have enough to buy a 4-10 cab for about the same price as the SWR head alone. What I'm looking for is something to cut through the mix live with a guitarist using a Marshall stack. I'll probably run this head through my current Ampeg 1510HE and later get an additional 4-10 or perhaps just a 2-10. I'm going to be playing metal/hard rock, tuned 1/2 step to 1 step lower. is the SWR my best choice?