Ok. Since my head was just stolen, I need a new head to power my 600 watt 8 ohm mesa boogie 2x12 cabinet. My money is low at the moment so I have to go the used route to get something powerful enough. Ive narrowed it down to two choices. Let me know what you guys think. a used Hartke LH500 500watts at 4 ohms for $200 or a used Acoustic B600HB 600watts at 4 ohms for $250 any ideas how reliable either of these are, or if they are a good pairing for my new cab? Thanks yall.