I currently have the ampeg halfstack of the svt-410hlf and the b-2re. I'm looking for some more punch and lowend. I play heavy, hardcore, and metal. On craigslist there happens to be a few really good deals on an svt15e and svt210HE. What do you guys think would be a better combo if either? Is adding a 410 and a 210 going to sound just like a 610? Because I hear 610 have really nice tight tones. Im also thinking about upgrading the head to an svtpro3 or something.