BBTS is a massive attraction for me. I don't buy a lot so it's great that I can buy 1 item and keep it locked away for a few months until I buy other stuff to go with it. It's different if you are a plastic crack addict and buy heaps. Pure win personally. Great service too. And twice as fast shipping as RK.
I've actually found RK ship quicker than BBTS in my experience, often it'll sit in the warehouse for up to a week before it's marked as shipped, and tracking details indicate it's actually posted a few days after that... but then on other occasions they've been really quick.
RK is more consistent, and HLJ has never been a problem
EDIT: having said that, I really appreciate BBTS's Pile of Loot and HLJ's Private Warehouse (basically the same thing, the only difference is BBTS charges shipping up front, HLJ only when you ship it)
And I do have pre-orders current with all three atm
Isn't it the norm that RK has pretty fast delivery. The few orders I've had from them arrived in about a week, maybe less. BBTS usually take the end of the second week (after Saturdays being added to the delivery times).