Just wait about a week or two, most people will receive their R1 early next week.
I have to say that the GR02 are insanely good for the price, and when's the last time you've seen a sub $50 earphone come with 10 pairs of eartips?
I'd be surprised if the R1 are better than them, but it comes down to preference.
just watch the http://www.head-fi.org/t/631240/brainwavz-r1-review thread for a few weeks, and don't just jump on the first review that's posted by someone giving a raving first impression within 15min of receiving them
give it some time