They have it rated on Amazon as 4 out of 5 (10 reviews), so it doesn't seem too bad. Might want to search the net for more.
I have the TG8250 (ETQ8250). I got it about 18 months ago and haven't had any problem. I start it up and let it run for 10-15 minutes every few weeks. I've only had to use it once, for about 90 minutes. It has always started in a couple of pulls. The 8250 also has battery start (battery not included), but I always start it manually, then start it again with the battery. I suspect that for heavy use, it might not be up to the task, but I'm just basing that on the fact that it is chinese made, rather than any empirical data.