Received my 5S today and have been apprehensive seeing the many comments about straps and sizing. I bought the watch so that I can wear it everyday, from full suit at work to casual to my activity items. Had to order it online as units weren't available locally for me to try on.
I have a 7.5 inch wrist and have 8 holes left on the strap when secured, so just wanted to say that the concerns about sizing may be overblown.
It is the right size for my intended purpose and similar to my previous 235, just more everyday wearable.
Your results may vary!