Hi Vince
Welcome to a.org :-)
The beauty of AmigaOS is that it is as complicated or as simple as you want it to be. If you just want to use it for running applications and games, then your Windows and Linux experience will give you eough experience to use AmigaOS.
There are many different models of Amiga, and which one is best for you will depend on what you plan to do with it. If you can list some of your requirements for the machine then we can let you know the best system for the job.
--
moto
