I've bought Prevail Epsilons from Zkeebs before and was so happy with how they sounded in the boards that I have, that I had to buy a few more packs to secure extra and to make sure I have enough for all types of layouts. The lube and filming were really well done, although several switches still had a sort dry scratchiness to them that I noticed, but isn't enough of a ding (an easy way to fix with just opening them up and applying more lube). Got to me relatively quickly too!