What are you upgrading from? They're better than the Filco OEM keycaps that came with my keyboard. But they will feel thin and hollow compared with GMK, ePBT, KAT, etc...
Some of their sets work very well from an aesthetic standpoint. So if there's one you like, it's affordable, and fits your keycaps, you might as well pick it up. They're usually pretty consistent, but sometimes the stems are twisted [one Caps Lock was like that].