I saw a few folks over in the VZW GS2 forum pre-ordered it for $150 (16 gig version), which makes Amazon's price on the Skyrocket WAY out of hand..
Not sure what's going on over at Amazon but they're not offering the discounts they used to so I see little advantage other than saving the sales tax. At the end of the day, if savings aren't significant it makes no sense to buy online when you can go to a store and pick it up.
Am going to sit tight until the GS3 is in the stores to compare it firsthand with the Skyrocket and HOX.