I use a GK 4x10BLX (I spent all my money on the 400+ lol), and I have to say it isn't bad sounding, and sits pretty well in the mix. I also like my BagEnd S-15D, which doesn't shake the house as much when I'm practicing.
I like the lack of tweeters in my cabs, since I use Fenders (and my PJ hums...sigh), very reduced hum is nice.
I don't like mixing speaker sizes, I'm anal about that...and OCD. I like my speaker sizes to match. Something to think about
