I have been using a Datrek "Quiver Tech" 3.5 pound stand bag for a few weeks. It has been pretty good. The only real issue I've had is that the stand legs can tangled in the full length metal wire framework if you don't put it down exactly right. No big deal, but is mildly annoying.
It has full length dividers and a good overall design.
The Sun Mountain Superlight 3.5 looks to have a better stand and a better carry-strap design. However, the Sun Mountain's street price is $120 and the Datrek's is $80.
For the money the Quiver has been a good value.
/Ed