My Optimus V has been rock solid, I rooted it to remove some bloatware, but it is Stock Otherwise. My only complaint with the device is screen size, and memory. The CPU is a little sluggish but I only notice slowdowns when using navigation. Switching orientation while using navigation seems to just kill the little guy, but if I am patient he comes back to me eventually. I would think the LG Marqee (optimus black) would be pretty reliable. I don't think it got much complaints when it was released on Sprint. I hear a lot of conflicting stories on the Triumph. I think there was just a few really bad lemons in there that caused a lot of problems. My hesitation with it now, is there seems to be no push from Motorola or VM to get that device to 2.3. I cannot see spending money on a new phone that is not at least to 2.3 at this point.