I have some of the 8W versions, and usually never run them on high power. I program all the channels for mid or low power.... only bump it up to high if I really need to, but I'll swap on a longer 1/4 wave antenna first.
They aren't as friendly to field program as the "real" radios, but in a pinch, you can. Used to be advantageous to have a bunch of the same model, but now with Chrip, as long as you have the programming cables, and they're supported, it's easy to move memory channels from one to another.
I have owned/still own the UV-5R (several versions/firmwares), UV-5R Tri-Band, BF-F9V2+ (BF-F8 with a different model number), UV-82. I also have some Wouxun HT's, Puxing, Wierwei, and then some Yaesu and Kenwood HT's.
The Yaesu and Kenwoods are better for using with a sound card interface or TNC, as the chinese ones switch between TX/RX slower, and their squelch is laggy.