well here goes....my first post on here - i will try to keep it short. I am in the market for a new bass head. Currently I have a Carvin R600 head along with a Carvin 2x10 cabinet and a Carvin 1x18 cabinet. I have had the amp for about 5 years and it has developed a problem where it it will just suddenly distort my bass signal while i am playing. When I "tap" the unit with my hand it will go back to normal. I know it is something in the head and I am fed up with it - unreliable and just frustrating while jamming. In fact I took it to Carvin (living in San Diego - i hand delivered it) and they couldnt find the problem. Having said that i want to buy a new bass head. I triad out an Ampeg SVT-4Pro through my Carvin speakers - brought it home and returned it back to Guitar Center within the 30 day return policy. I dont think im into the Ampeg sound. It was nice...but i think i was kidding myself. I play a Music Man sterling 4 string and fretless Carvin 5 string. The sound i am after is not vintage classic rock (this isnt directed at the Ampeg either..i may have dug it more if i have quality cabs with it). I am more looking into a modern, clean punchy sound. I am considering SWR and ANYTHING else ($1500 price range) that would work well with the cabinets i have now - and work well when i get more money to upgrade those too. Any comments on what would be a great, quality head would be much appreciated. My exposure to brands is somewhat limited to what i see at Guitar Center and such..so please enlighten me. The kind of music our band plays is really pretty broad - Rock, funk, country elements. I use a Fulltone Bass Drive pedal, Electro-Harmonix Bass Synth pedal and Electro Harmonix Poly-Chorus pedal to further give you an idea of the kinds of things that will be going into the new head. Thanks in advance.