I’ve had quite a few, including the highest tech laser-guided, hydraulically activated, power this, hoover that jobs, finally ending up with what I was advised to get in the first place, a Wahl:
https://www.amazon.co.uk/gp/product/B013K0926E/ref=oh_aui_search_detailpage?ie=UTF8&psc=1The above is easily the best I have tried in terms of quality of cut. It’s like the ones you see at the barber, with a range of combs.
Battery life is excellent - weeks and weeks, if you can get away with one or two trims per week
Charging is remarkably fast (never needs more than an hour, I’d say).
The shaver attachment is not bad at all, though I rarely use it - as good as a dedicated electric shaver for the neck.
There’s also a mini trimmer attachment, a smaller version of the shaver, which is all I use now to tidy up the cheekbone / sideburn bits.