A 150 is a good tank size for larger tangs...though if you can do 150 maybe consider a 180
A naso (or vlamingi or similar) is not suitable, IMO, for anything under a 5 foot tank, and really we're looking at a 150-180g. They get VERY LARGE and are extremely active fish.
A kole tang would be a decent choice for a smaller 55g - 75g tank. If you have a 75g or higher, you can consider yellow, purple, scopas...maybe a small blue for awhile. But all of these should be moved, realistically, to a larger tank (5' minimum). Maybe if you keep only one, you can get away with it longer, but I really do not suggest more than one tang in a 55-75g tank size. If you have a larger tank, then you can consider combining them, but do some research on what kind you want, make a plan for the order to add them in, and consider using a QT tank.
No tang is really all that hardy, and need, IMO, a mature tank with good water quality. Ideally that would be about a 6 month old tank with lots of LR for grazing.