I use
this little guy but he's a cheapie... Works okay... almost better for the unmentionables than for my beard, in fact. Beard hair is getting a bit too wiry. Any Wahl should do a good job, it's the brand most the pro's use.
As long as it's got a good guard, whether adjustable, or just multiple one-length guards, it should do the trick.
If my battery finally goes out (which might happen any time, as mine is easily 4 years old by now) then I'll probably switch up to
this one. While it's not a Wahl,
this one is waterproof/showerproof, and has three different
heads, PLUS guards. How freakin' cool (and unnecessarily complex) is that?!?
There are other ways to convince him, too, of course! Hell, I traded SWMBO's permission to build a walk-in cooler in the basement in exchange for a kitten for x-mas!
It sounds like you guys do a good job of getting along/sharing space, and that ironically puts you at a disadvantage for finding things to use as leverage... but There Are Ways. A fancy dinner with lots of man foods (good steak, taters, etc) is always a nice way to a dude's heart.
There's always the MEAN way, too. (Find a friend with good prescriptions, knock him out with something strong, and then go to work while he's snoozing. )
Erm. I mean. Um. I would never recommend that. What are you all looking at?