Based on my experience with the local Trek store, I don't see where the after sale sale service and helpfulness could be any better elsewhere. They have a great crew and are just so responsive and excellent allies in keeping my bike running at top form.
I ride the Allant +9.9s which has both a higher price tag than the Gazelle but also way better components and a carbon fiber frame. That said I have not ridden either of the others.
As someone who routinely rides 600 or more miles a month, it is my strongly held belief that the people you buy from and their commitment to keeping your bike in top riding readiness is equally, if not more important than which particular bike you buy or even saving some money on the purchase. After all the dust settles, the best bike is the one that puts the biggest grin on your face and is always ready to ride, not in the shop.