I have a Hartke 410xl 400w cab and I was wondering if I should get an HA4000, HA3000, HA2500, or a cheap and well taken care of GK Backline 600. The thing in question is really the power output. Since I'm only using one cab, should I go with the HA4000? Should I play it safe and get the HA3000? Or should I get the HA2500, which has a nice graphic equalizer, but then would that one not be powerful enough to power the speaker? Help?