I've used and liked the Kata R-103. Great, safe bag. In fact, all the Kata stuff I've had has been very well made, very well padded and a good value for the dollar. I also like that they sell "kits" that let you cut your own size dividers so you can customize the bag to your likings.
If I had a complaint it would be that the padding is so extensive that comparably sized bags from other manufacturers will hold more gear - albeit with less protection.

