If your tower was an original A4000T I would say keep it, but as the two machines are based on the same motheboard, I'd say sell the tower. Also the wedge is a pure Amiga, so for sentimental reasons it is better than the tower, if you are only going to use it to run classic games.
I actually miss my A1200. It was great for showing people anims and graphics. Just pop it into a bag and off you go.