2nd what was said earlier, give safety razors a shot.

It takes some practice to get everything right, like my first 3 or so shaves were kinda bad but once I got the hang of it I'll never go back.

You can get a legit set up for the same price any decent electric trimmer and it'll last forever, only needing to buy soap and blades for the rest of ever (both are cheap).

If you decide to stick with a trimmer, I've had good luck with a BaByliss that my barber recommended, but it doesn't get as close as I'd like.