I have just been to my local shopping mall in the North of England where I got to try both the S6, S6 edge and M9
I firstly went to the Samsung store to see their beautiful presentation of phones, I asked if they had the S6 in and they said right this way sir.... unfortunately, by 3pm all of them were out of battery... JOKING!
My first impressions were, this phone is AMAZING, it was super fast with no lag, the screen was out of this world, and the camera hump isn't a problem at all.
Between the edge and the regular, I would elect the regular, firstly because of the way it feels in the hand, I can imagine people dropping the edge ALOT
Secondly, I believe the regular S6 has a bigger screen, I know that technically it is the same size, but when you are looking directly down at the phone you aren't fully seeing the content on the edge of the screen, yes it is visible but not as clearly as the regular S6. So technically the edge has a narrower screen.
I got to test the M9 absolutely no presentation in any stores, it was just wired up on the rack next to all the other phones.
I first noticed that it was warm, super warm, it was kind of like taking your power pack out of the wall socket and holding it. The screen had been on all day, but so had the S6's.
However, the screen on the M9 was also great, and it felt amazing in the hand.
I'm just waiting for the battery life confirmations so I can order the S6