I know not everyone wants to pay more for peace of mind, but here's my opinion:
Don't buy RAM from random companies even with lifetime warranties unless you know they will be around a while AND they have great customer/technical support. Sure I paid extra for some Crucial RAM, but if it ever goes bad, I am comforted by the thought that I can call an 800#, talk to friendly service agents, and get the matter resolved QUICKLY. This is the same reason why I buy other peripherals from places like NECX. Those of you with 12 pcs and 32 gb of RAM between them all probably disagree, but it sounds to me like Agamar is making more of a long-term purchase and this might be something to keep in mind.
I've still got a pc-100 stick that I bought from TCComputers, who have possibly the worst customer and technical support over the phone in the history of market economies (their amazing lack of skills will probably not be bested until the year 2185 by a blind, deaf mute selling faulty cold fusion devices made out of cow dung)... I nearly had a conniption the other day at the thought of having to deal with them when it wasn't working in one of my machines (fortunately it worked in another).