Welcome to RCU. Hopefully we'll be able to help you out here.

Of the three you listed on the Tower Trainer is really a true RC plane. That would be the one that I recommend. If you're looking for what else is out there I've put together a list of planes that make good trainers. Take a look at the list and see if anything suits your needs. You can find that list here:
[link=http://www.rcuniverse.com/forum/m_4537845/tm.htm] Looking for a trainer, what's available. (Updated 10-3-06) [/link]

Hope this helps

Ken