So, I just got a 8-ohm Mesa Boogie 610 and a Ampeg SVT 7 Pro. ((Just for future reference, the Mesa is getting 600 watts from the SVT)). Now, I do not need to pickup another cab by any means, but getting the full 1000 sounds pretty tempting. What I'm thinking I'd like to do is add a 210 ((Mesa 8-ohm powerhouse)). So I've read all of the forums about mixing different drivers (410+115, for example) and some threads that address adding a 210 to a 410 cab, but I can't seem to find one that answers this specific question: Does making sure the 210 is getting less power than the 610 really make that much of a difference if the 210 can handle more power than it will be getting anyways? Here's the stats, just so it's clear: Currently, an AMpeg svt7 pro is pumping 600 watts into one 8-ohm 610 cab that can handle 900+. Potentially, an Ampeg svt7 Pro could be pumping 500 watts into an 8-ohm 610 and 500 watts into an 8-ohm 210 on top of it, which can handle 600 watts. Is there a problem with this that outweighs the benefits of 400 more watts and having some speakers more level with my ears?