I was near a Best Buy in Cary, NC and decided to try and by an Apple Watch there. I really can't decide which do wanted to try different sizes. Waited for the guy in Apple section to sell a Macbook to one person and an Apple TV to another. Then he told me no one authorized to sell watches was working today. What?
One thing to keep in mind: If you have a large wrist and need the L/XL strap size (for the Sports model at least): Apple will swap (for free if you ask) the band that comes with the watch i.e (the S/M and M/L size comes with the watch) for the L/XL size. If you buy the watch at Best Buy, they won't do this....and if you take a watch you bought at Best Buy into Apple, they won't make the "switch" either (i.e. have to buy it at Apple).
The caveat (as I've discovered): The L/XL currently only comes in the White or Black bands.
I bought the Sport Gold/Midnight Blue combo at an Apple store this week and they were willing to "swap" out the midnight blue band with the L/XL version (i.e. since I have an 8 1/8 wrist size). However, when they checked, they realized the L/XL versions only come in White/Black...they were surprised at this also. Luckily, the M/L band fits my wrist..just barely, on the very last hole!