I have owned a UT33C and a UT33D for over a year now. I like the small size and small price tag. I think I got them both for under $7 each on ebay. I use them both often and I am happy with them. The 4000 counts on the 33D comes in handy quite often.
I also have a UT136D. Cost about the same $7 and is the same small size. But the build quality is somewhat better.
UNI-T makes cheap junk but it's pretty good in comparison to the other cheap junk available.
edit: I have the 33A not 33D.
edit2: I am a UNI-T vs mains voltage survivor, LOL!