So I went to GC to try the the Markbass CMD JB amp. I already have a 4x10 & etc. I need something more portable but it still needs to be able to keep up with a drummer for rehearsals and what not. Anyway I have about $650 to blow max. Err, that didn't sound right. I have $650 to spend, period. I was pretty happy there was a Markbass combo that I could actually afford. And it was nice in pretty much every way....except that I play a lot of rock, blues, pop, etc and this thing just didn't rumble like it's less expensive competitors. GC didn't have the BG250 115 on hand but they did have the 112 and that thing produced a greater percieved volume. The Markbass had a very nice round tone with lots of single note definition. If I wanted my bass lines to sound like they were being played on a classical instrument like a cello then this thing would be it...and thats not a criticism. It did what it did very well, I just couldn't seem to get a big rock sound out of it. The BG250 112 seemed much louder. Of course the rumble is probably coming out of a port and not really an audible pitch but that effect of feeling the note is essential in certain styles of music, styles I often play. Plus I missed the tweeter. I didn't think that would matter to me but apparently it does. I do need to try playing around with the filter knobs a little more though. The others I tried were the Ampeg BA115 (I think, there was no tag on it) and the GK MB115 (I think, it didn't have a tag either). The Ampeg sounded great and it was very versitile with it's character selector. I really enjoyed playing this thing but it was way heavy compared to the others. It really doesn't fit in the ultra light catagory. The GK was good. It had a balsy tone, was very loud, and incredibly low weight. Definitely a practical purchase. Some how I had trouble loving it though. It was great but somehow failed to really excite me. Sorry, it's more of a general feeling than a practical rationalization. If I play it tomorrow it might be the best thing ever. I was bummed they didn't have a bg250 115 around. I've heard so much about it and the 112 was really cool. It was impressively loud and extremely versitile tone wise. I've pretty much convinced myself I should get one of the 115's. Somehow I'm still disappointed I wasn't as blown away as I hoped to be with the Markbass. Maybe I'll try it out again tomorrow, and the next day, and the day after until I'm mystically transformed by that Markbass mojo. This got me thinking what I want out of my tone. I recently heard a guy on youtube, Scott Devine. THATS THE TONE I'M AFTER!!! He will tell you it's mostly his hands, and he's probably right, but I doubt I can buy his rig for $650 anyway. (If you're listening Scott, thats $650 for the head and both cabs!...PM me!) Maybe I'll just build my own rig. I'll garbage pick an old tube TV chasis, load up a kickass speaker, and blow peoples minds! "Dude, thats totally rad, were can I get one of those?!!!" It'll be the start of the next great trend....Neotrashrockabilly. See what you started Markbass?! It's all your fault!