for anyone that might use this for reference, I am a Canadian buyer :D

AmiAmi

• pros.
  • Quick shipping.
  • Decent prices.
  • Pre-owned, cheaper items.
  • Ships DHL, so I can pay duty online.
• cons.
  • Small selection of in-stock items
  • Duty

Good Smile US

• pros.
  • Official seller.
  • Pre-orders.
  • Some in-stock items (around 3~ pages)
  • Ships USPS, no duty.
• cons.
  • Small selection of in-stock items.
  • Their website kind of sucks when it comes to buying things.

Tokyo Otaku Mode

• pros.
  • Lots of deals, like all the time
  • Does giveaways constantly
  • Their pre-orders usually extend past other sites.
• Cons.
  • Currently can only ship to Canada through FedEx, and its very, very expensive and will likely have duty.
  • Almost always delays things.
  • Very expensive

CrunchyRoll

• pros.
  • Ships with USPS, no duty.
• cons.
  • Very, very slow shipping right now.

Hobby Bee Canada

• pros.
  • Canadian -> fast shipping and no duty
  • Partnered with Goodsmile (... i'm pretty sure!)
  • Cheap shipping
• cons.
  • prices are very high
  • Less items in stock than other sites