In the process of shopping for/designing a new amp rig. I've been playing a number of years, but never really got around to upgrading from my practice-combo amp, so this will be my first experience owing and using a head+cab configuration. I've also spent a few months trying out different amps at different stores and I'm pretty much decided on the head I want to buy: GK-700 RBii or GK-1001 RBii I play an Ibanez SR506 (6-string) and an Ibanez BTB 675 (5-string) and did get the chance to play each of them thru the GK's and other heads + whatever cabs the store had them hooked up to. I wouldn't by any means call myself an expert on heads, but I do feel like I learned a lot after demoing different ones for a while now (e.g. how they compare to one another/things I like-dislike about each of them... at least enough to know what I'd be getting for my $). But.. I'm still a little lost when it comes to cabs. I did try several different brands (MarkBass, Ampeg, Hartke, GK, SWR), sizes while looking for the head, though I wouldn't call my shopping much of a "controlled-experiment" and I don't feel like I've gotten a strong sense of what qualities to look for in a cabinet or what I like about one vs. another. All I can say right now is that I'm not interested in a 1x15 or 2x15 as my 1st and single cab, I have yet to see or try any with 12''-speakers but I'll keep an open mind, a 2x10 is too small and 8x10 is way too big... so I'm basically looking at a 4x10 (or possibly a 2x12). Anyways, I'd really appreciate as much insight/recommendations as you guys/girls can offer that'll help with my cab-hunting. For example: what are some 4x10's that I should keep an eye out for and/or brands that you would speak highly of? if you are/were a GK RB-user, what cab(s) did you run them through and how was your experience with them? etc. I'm not expecting to have everything figured out from replies to this thread, nor do I plan on taking anyone's comments as gospel---when it comes time for me to make the decision, ultimately, I'll do what I want and listen to my own opinions first. But I could really use some direction/outside input from others, especially since I was getting nowhere asking for advice at GC or SamAsh (where most of the employees I spoke to probably knew less about cabs than me). Thanks!