If you live in southern Ontario, I'll shoot for Epps. I got pretty much everything I needed to get 9mm started for the Dillon 650. I reckon after S&H and taxes, buying from Dillon may not save much due to big cost of shipping for the 50lbs 650 (I dunno, doesn't feel that heavy but post office slapped that sticker on my dillon box).
But when I wanted extra hard to find stuff, I just ordered directly from Dillon. Good to deal with too. Warranty is the best. I broke the clear plastic assembly funnel plate on the case feeder. I emailed them and explained I fractured it and is ready to break any time. They sent me another one for free and even said to see if anything else is worn out to benefit on the $15 S&H that I had to pay.
Emailing the headquarters that actually emails back is amazing!