I highly recommend the Meguiars G220 as it is a dual action (random orbit) machine and is extremely easy to use and quite safe even in the hands of a beginer. It is also such fun and quite addictive.
Be very careful of rushing out and buying a cheap rotary. The heat build up is frightening and you can easily burn through your clearcoat. Having said this, I recently attended a detailing course here and we were given the opportunity to play around with a rotary. It was a lot of fun.
A good tip is to go to a scrap yard and ask them to give you an old fender to practice on before you work on your bella.
Here are two shots taken after a recent detailing session
1. Washed
2. Clayed
3. Paint Cleaner
4. Polished with G220 using Meguiars M80 on a Megs polishing pad
5. Car-Lack 68 NS AIO Acrylic Sealant
6. Car-Lack 68 LLS Acryl Wax
The first is an overall "after" view:
http://i98.photobucket.com/albums/l2...Sundry1001.jpg
The second is a "reflection" shot
http://i98.photobucket.com/albums/l2...ailing1017.jpg