Between the two choices, An anglegrinder will be more versatile & a hellufalot cheaper than a benchgrinder.
Its pita to grind semi decent bevels on a benchgrinder, Anglegrinder with a flexible disk, Its quite easy.
Mind you. I know there are scores of inexpensive benchgrinders, But thats precisely what they are.
A benchgrinder of decent power & quality is far more expensive than an good anglegrinder.