Ok. I've owned these cabinets for almost 10 years and have lovingly cared for them.... the ozite is a little worse for wear, but the cabs and drivers themselves are fine. I originally bought these with the Hartke 5000 series head (Biamp) My 5000 is dying and I need to replace it *ASAP* but I don't have a lot of money. I'm looking for the best solution for under or around $500. I will be purchasing a Line 6 Bass Pro or XT Pro in conjunction with or soon after this amp purchase, so please take that into consideration with your answers. The 410XL cab is rated at 400 watts @ 8 ohms and I'm pretty sure the 215XL cab is something similar (500 watts maybe) at 4 ohms. Any advice is appreciated.