I'd probably stick with the G-3, price could be a factor to help with that kind of choice. If the G-4 is $50-75 more than the G-3, or better yet less than $100 more than the G-2, it might be a "steal". I've noticed with the ASM line that there isn't much of a price difference between 2-3 models and then it jumps up a bit for 2 or 3 more models.