I have ordered from the following online stores:
- Robot Kingdom
- Digital Toys
- Kool Toys
- Golden Age Toys
- TFSource
I got no shipping notification from Digital Toys; no other complaints for them.
Kool Toys is a bit pricey, but I got my stuff quickly. I'd probably only use them for big orders in the future to take advantage of their flat rate shipping.
Robot Kingdom has really good prices, but shipping starts at $30 for pretty much anything. Once again, I'd use them for big orders only.
Golden Age Toys has decent prices, but slightly expensive shipping. I got Titanium Sunstorm from them since they were the only ones who had them.
TFSource has decent prices but really good customer service. Really good packing, too.
I have heard good things about BigBadToyStore as well. Their prices are expensive, but the customer service is top notch. Plus the Plie Of Loot concept can be quite helpful.
The only place I would actively avoid is Ages 3 and Up due to their current supplier issues. (Basically, their suppliers are screwing them around.) Don't hesitate to buy from their brick-and-mortar stores, but be cautious when pre-ordering non-American TFs from them.
I am also planning to get MP Thundercracker. I'll probaby get him from TFSource or RobotKingdom - RobotKingdom if I have more stuff to buy at the same time, or TFSource if I'm just getting TC by himself.