online B&H that is because the times I've been to the physical store, the service has been sub-par, not very helpful nor friendly at all.
The first time I went to B&H (maybe 15 years ago) I was blown away by the knowledge and friendliness of the 'guy' as well as the whole photographer's Willy Wonka thing going on there with the overhead rails etc.
The last time I was in the store (2007) the 'guy' spent most of his (my) time telling me how tired he was because he'd been on a commercial video shoot all night.
I then paid my first trip to Adorama and found a really good 'guy' who actually tried to down sell me by telling me what I actually needed, rather than what I thought I needed. He reminded me of what B&H used to be - 'guys' who are subject matter experts rather than salesmen. 'Guys' who actually try to get us both to a win-win situation.
Now when I travel to NYC, which for me is a 7 hour flight, I go to Adorama. It's not as flashy but, for me, it's preferable.