I'm gonna be "that guy" and say that speaker size and tone are not necessarily related. If it's more lower-mid and "mid-mid" punch that you want, an Aggie DB410 (which I used to own) or an NV610 (which I own now) will surely get you that, but so will a Bag End S-15.I find myself favoring my TH500 with my passive Lakies, 44-64 and 44-60. It's a very vintage sound, warm, punchy and full.
The Streamliner brings something especially mystical my 55-01 and 55-02. The sound almost envelopes you. Very beautiful.
Don't get me wrong, I love my rigs. I just feel like I need a 10" speaker at times.
Actually the only thing that bugs me about my rig is that I bought White Hot. Which I like because it stands out. But I find myself at times wishing that I would have got the classic black. But it looks killer with my Trans White 44-60, very 70's. Almost like Liberace is stalking it mark it with vomit.
But I'll join the chorus and say your current setup sounds pretty great, and those White Hot cabs look fantastic!

