I agree that you will just need to try it out and see for yourself.. Most retailers offer a 2 week return period.
I love mine! I have a rev 2 and it stays cool. It gets warm every so often when I push it but it's never gotten what I'd consider to be hot and it's never shut down.
My unit is fast, snappy and smooth.
Yes I got mine from Amazon. The seller of mine was DeltaMobiles but I don't see them selling it any longer.
I think your best bet would be to contact the sellers and tell them you will only accept a rev 2. Based on what they say, buy or move on to the next seller with the same question..