Review (2/5): vs T-2000
I purchased this to replace a several-year old T-2000. I found the 2000 very handy for use touching up my hair, sideburns, etc. The T970 is totally unsuitable for this purpose. The floating guard overhands the blade, unlike the 2000. Removing the guard still leaves the vacuum inlet in the way of the blade. The vacuum feature cannot be disabled and clogs the inlet with longer hairs with each pass, necessitating removing the hair before the next pass.
The T970 may work fine for beard and mustache trimming (it's stated purpose), but is nearly useless for trimming hair. Just be aware.
A plus is the battery charges much faster than the T-2000, although it uses a wall wart for power instead of a simple cord as on the 2000. You can also use the 970 by simply plugging it in, rather than waiting for it to charge. It's also noisier and less powerful than the 2000.