In reality all regiments are equally as good. Just be sure you want to be on main battle tanks, if not then you might want to look at a recce regiment.
But in the end, seven years of Recce were brilliant craic before I commenced a seven-year resettlement course.
Of course if you seek a commission, it's a different kettle of ballgame. I got accepted for RCB (but failed) and was surprised to learn that the "private income" and "posh accent" malarkey survived despite the changes that had been trumpeted.
But that was 30 years ago. I bow to the better knowledge of a younger generation on that question.