I feel that if you can wait, hotsnuglemonstr, you should. Regardless of what processor the eMacs get, be it a G4 or a G5, the eMac will definitely be superior to what is currently on the market, and the update should be just around the corner. If the current eMacs are good enough for you now, then the new eMacs should be even better.
But if you can't wait, then you should look through the Apple Store and see what deals they have and pick whatever you think is best for yourself. Sure you will be disappointed to see a better machine for the same price in the future, but then again, this in inevitable, regardless of when you buy a computer. The bright side is that whatever you buy will still be a viable machine years down the road. I know this because I'm typing this post on my G3 Beige.