RAM Manufacturer Opinions

HI everyone. Looking for some advice on places to buy RAM for my Mac Pro. Looks like most places that have been recommended by people on the forums are charging around $400 for 2GB (2x1GB) of RAM. Manufacturers I'm talking about are newegg, transintl, macsales, 4allmemory, etc. I've found a few that are a little cheaper and was wondering if anyone had any experiences with them. Memory to go and power line memory both are a bit cheaper with memory to go selling for about $366 and Power Line Memory selling for $338. I believe I've seen members saying that they've had good experience with the memory to go modules. Has anyone used the Power Line Memory modules? A link to the product is:
http://store.powerlinememory.com/ma685g-a.html

Also, any other opinions are more than appreciated. I'm certainly not averse to paying the extra $40-$70 for something that I know will provide good results but if either of these prove to be good choices, then I'm also not averse to saving a little chaching!

Thanks.

Mac Pro 2.66 Stock Mac OS X (10.4.7)