There have been some nice bags listed here. I would just like to add a couple comments in general about range bags.
First, be careful about size. A bag that is too large becomes unwieldy and heavy. It's really easy to pack it full of stuff that you don't need every time. Then you can't lift the thing or it starts to tear itself apart.
Second, DON'T BUY A BLACK BAG! Yeah, I know, it's actually kinda hard to find one that isn't black, but there are a few very good reasons not to get that color.
Every try to find a small part in a black bag? Man, those things just disappear in there. It feels dumb to have to get out a flash light in broad daylight, but I've had to. So, a color like Coyote is much better.
Then, everyone has a black bag. If you ever go to a competition and set your bag down on a bench, it gets lost in the pile of other black bags. A different color helps solve that little issue right off.
As an instructor I use a range bag three or four days a week. It is a tool that is just as important as my magazines or ear protection. Here is the one I use:
LA Police Gear Jumbo Bail Out Bag
It's only $30 and is big enough to carry what I need without being too big. The Coyote color makes it easier to find stuff in the bottom. I've been using this one for over a year now and it's holding up well.