You can never get razor close from a clipper or trimmer because of the thickness of the stationary blade. Zero gapping your T Outliner can get pretty close, but you risk razor burn from having the moving blade irritate your skin if you set it too close. Have you tried a foil shaver? Using a foil shaver with the grain will probably keep you from getting ingrown hairs, but once you push it against the grain you risk having the hairs cut below the skin. I used to worry about getting my fade razor bald, but realized it only lasts half a day before I can feel stubble anyway so why risk it?
I'm curious what it is about the Bevel that intrigues you most. It's a very nice trimmer, but for that price it's not any better than a T Outliner. If you want cordless, the cordless T Outliner is still a better deal. If you want an adjustable trimmer, the Wahl Cordless Detailer is much cheaper. Best personal trimmer for the money is the Slimline Pro, IMO.
EDIT: here's a good video about avoiding razor bumps, but I know there are so many opinions on this subject