I like them, but way too expensive here, like most other things. I will keep using the Napa Proselects with their excellent build construction. Their efficiency might not have 99% numbers but nor does the OEM. It seems to work good for my needs and for the 3.xx$ I pay... its even less than the orange can at CT! I paid about 10-11$ for a Napa Gold... still cheaper than Fram Ultras at CT. Fram Ultra at CT regular price= 15.99$ = ouch. No thanks, will use Napa Gold for less.