The Freescale Tower boards are very versatile, and there are many different boards you can combine like lego bricks. When I tinker with my own hardware or need to try out something, then I use a special prototype board: the TWR-PROTO.
The TWR-PROTO boards are not very expensive ($15), and could be re-used multiple times. But after some soldering-desoldering-soldering-desoldering cycles they get messy :-(.
But today I have found this: a Tower Breadboard on ebay!
Twice as much as the TWR-PROTO, but much more value :-). So if you were looking for a better alternative to the TWR-PROTO, that might be the solution.
Happy Prototyping 🙂