B&H
Adorama
FreestylePhoto
i ordered my D70 from freestyle because itr was the only place that had them in stock a week after it came out, service was good, it came in about 8 days, not bad for a 1500$ purchase
i order most if not ALL my darkroom supplies from Adorama, i just do dont reallly know why, and they have always been great, fast shipping, good packaging great service
i have ordered a few things from B&H like lenses and filters, their service is great as well, especially their used dept
Onecall is good from what i hear, ive never used them
Alkit - is also good and they have a great rental program, im renting the 12-24mm f/4 nikkor lens in a lil bit, 90$ for a week and shipping time doesnt count