I also test the continuity beep response. It is a little slow.
Thanks to Dave and his EEV Blog, I was aware of the continuity speed.
As it happens, it's not that big a deal for me, as the time it takes to make sure I've probed the traces, it beeps.
Maybe I'm just slow, but super fast continuity testing is faster than I can probe traces. So if it's fast enough for my probing speed, it's sufficient. So I don't knock the unit for that.
Overall, I found the U1252B to offer a better bang-for-the-buck than Fluke's offerings (compared it with the Fluke 287), and have been quite satisfied with it.
After 1 year the rubber coating on some parts are flaking off.
I've not had mine that long, so it's not been an issue so far (got it in Jan 2012).
The charger died 8 months after I got it.
I'd like more information on this if possible, as I recall it was mentioned earlier (recall you indicated it was a good design, but poorly implemented). Any specifics you can offer?