There are a few of us at my house with the 4-ball AMF bag.  Mine's holding up very well.  I'm pretty sure it's a KR bag.  It's a 2x2 stacked bag, not one of the new style inline rollers.

SH

I have the ebonite, worth every penny

I also have the Ebonite Grand Tour and it's a good bag with a sleek design, has lasted longer than most of my previous stuff in the past. The only downside to it is that the compartment pockets are small so you won't be able to get a ton of stuff in it.

KR Lane Rover 4 Ball Bag, Had this bag over 5 years now and it is still in great shape. I like the 2 X 2 over the in-line bags because you break it down to put it in the trunk. 30lb+ lifted twice is better than 60lb+ lifted once. My back likes it too.

CaptZap

Recently picked up the Columbia 4-ball Inline roller....last years model (just different color) on closeout at a local pro-shop for $125. Really good sized rubber wheels with ball bearings so it rolls very easy, seems solidly made, plenty of room for me and the price was right. I have plenty of room but a diehard tournament bowler might want one more pocket for stuff. There''s also a neoprene pocket at the end that I haven''t totally figured out what to do with though. Anyway it seems nice so far.
This is the exact bag:
http://www.bowlersdream.com/col4inlineroll.html
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Never argue with an idiot....They''ll drag you down to their level and beat you with experience!  

Edited on 12/3/2010 12:25 PM