Hard to beat the price of a NoToil...buy one of their cleaning/oiling kits and get a filter free. Maybe that's a promo that's over?? Nope..I've just found a couple of e-sites that are still advertising it..$18 for soap, oil, rim grease AND a filter!!
It's a decent filter..not as 'plush' as the TwinAir, but a TwinAir is pretty spendy, too. Last one I bought (last week) was $40!
It's the oiling system you use that's important. Something simple and easy as NoToil's setup means you're more likely to keep the filter clean. NoToil is a snap to use..no muss, no fuss. Must take all of two minutes to clean (and clean up after) a NoToil oiled filter.
Cleaning a petroleum based oiled filter is a pain. And what do you do with the solvent when you're done with it? Dump it in the storm drain? Noone is that much an idiot.....are they???