Darn it, I can't find the review I wrote over two years ago for the Quansheng VHF & UHF handhelds. But I'm a happy user of a UHF Quansheng. The receive audio quality is excellent, and the transmit audio is fine as well. The receiver is quite sensitive (circa 0.2uV for 20dBQ) and power output is per spec. Selectivity is adequate. The mute is fixed, and not adjustable - its factory set to be quite 'fine' and has little hysteresis, but not too 'knife edge' like in operation.
The user interface is the worst aspect - scanning is a pain - you can scan all channels only, not 'tag' your preferred channels for scanning, and the scanning is very slow. Channel selection is an unhelpful up/down pair of buttons only, there's no way to go directly to a channel.
No DTMF, but has CTCSS / PL tone.
One important note is that a standard speaker-mike will not work with the Quansheng units. The antenna connection is a SMA male - so your antenna needs a SMA female connection on it, which is opposite to the norm of many modern radios these days.
When you consider the price, they're very good value!