Seems people quite often want to get curved end straps because they can't stand a gap, and many mid priced watches come with such options:
http://i1174.photobucket.com/albums/...ps9eac4f53.png
http://img600.imageshack.us/img600/6008/dsc2561.jpg
But is seems that most expensive watches nearly always have the gap:
http://4.bp.blogspot.com/-4KG7x0llxO...-Wallpaper.jpg
http://195.154.205.140/mesIMG/img1200/29950.jpg
So what are your preferences and why?