Not long ago I ordered an SVT3-PRO (would have liked to try the 7 but since I couldn't try one without committing I wasn't willing to take the risk) to replace my Hartke and would like to get a new cab to go along with it also (my current cab is 8ohms, I'd like a 4 I think).. so far I'm thinking either an Ampeg 410HLF, 610HLF, Bergantino HS410 or NV610. Is the 610 worth it over a 410 with a head this size? Which of these would better suit the sound I'm after (tight, punchy bass with a bit of growl from my SansAmp)? Any other brands worth considering? Keep in mind the Berg is a bit hard to get here but I've just read so many positive things on here I feel I have to consider it.