Whilst I wouldn't place their packaging last on a list, Amazon takes that position, I'd have to say that AmiAmi, RobotKingdom, BBTS & TFSource are superior in that department.
I can't speak to their physical presence, but beyond notoriety their online store certainly seems smaller. *shrugs*As for Amiami, I heard they are one of the largest store but their online inventory for toys are always shocking. Is like within 2 minutes is always sold out. Their hobby kits were one of the only things so far I could order with no hassles. But for toys is almost mere impossible. I noticed this for Transformer masterpiece, chogokins or any popular hot toy as they have low prices.
I'd put their ordering system on par to that of TFSource's, personally, but whilst Anime Export may be the cheapest at this point - I simply can't afford to front the cash up now as I need to save up.Anime Export has cheapest so far, but I have not ordered from them regularly and you have to pay upfront. HLJ has the best ordering system I know so far.
(That's the only reason I didn't jump when @TheJackSack tweeted the scoop)