I was trying to figure out what stores carry water cooling parts. Performance-PCS seems to have the best inventory and the store is below my state, so I could get my products faster. That EK Supreme HF Full Gold block sold out fast because it was cheaper than the other EK Supreme HF blocks.
Sidewinder I would go next since the store does have a great selection. jab-tech I have great experience with and went out of their way to ship some items that weren't in stock. FrozenCPU is expensive in my book, but they do have a large selection. MicroCenter would only be a last resort, but I just go there and look for parts. I just wanted to see if TFC Admiral rads have arrived in their stores.