I don't think mini hobby models is around anymore. I think it's Trumpeter now
Anywhoo, I've built a few of their MBTs, including the T-54, the M1A2, the T-72 (not the greatest), the K1A1, and have a couple more sitting around.
As you said, they definitely aren't Tamiya quality, but the price was right for me. THey do need quite a bit more work to get them looking good, but they're definitely buildable, and are an enjoyable modeling experience, as they will require you to actually use your modelling skills
Where did you find the kits? I've been trying to find some of the older ones, including the Leo and the AAV7A1, but no LHS has them around here anymore.