>>7526462depends on the line mostly, but pretty much the popular ones. Also I've never felt the need to have figures as soon as possible, so I make good use of private warehouse systems.
My local Smyth's/Toysrus keeps reducing action figure shelves, so most of my western stuff I buy from Kapow Toys. Once or twice a year I buy stuff I missed out on or stuff that's on clearance from BBTS, with their pile of loot and them almost having everything it's pretty convenient.
For import stuff it comes down between amiami or HLJ most of the time. Amiami i find tends to have better prices, but once again HLJ's private warehouse system is super convenient and helps me save on shipping.
I think I'll be using Showzstore in the future quite a bit, but I haven't bought from them yet.
Other than those big shops I occasionally buy from others when they've got good deals (like TFsource or Nippon Yasan) or from random weird shops that still have old items.