I will probably try this shoe out, but I think I have another couple months left of wearing my T22's. I don't want to buy them now because I want to try to use the 6 month warranty. Since the GR4's came out and the GR3's went down in price, how much longer do you think it will be easy to find them? I wear a 9 which always seems to be out in the older models. I have no experience in buying older model shoes, I've always just worn the T22's.