I have borrowed G2 Lite from my neighbor and am currently learning how to fly heli's (two of them) in the Lite version and I am satisfied with the overall performance of the software. However, it's always nice to be able to have other choices and that is what is lacking in the Lite version. If you don't care about trying to fly everything under the sun....then the Lite version will give you enough contact and learning to get a good idea of what to expect when it comes to the real thing.
Good Luck!