I liked these because they seemed a bit more heavy dutier than the past ones I've had plus the smaller squares helped for better security and didn't stretch out as much as others. However one downfall is the pricing. My friend ended up showing me his that he had ordered for less than half the price ($195 vs $4-$5 something).
As stated by others, the sizing is way off for some models. I got the 48mm pods for my ZRX 1200, based on the sizing recommendation. The ZRX carb diameter is 50mm so I assumed that had already been taken into account by the manufacturer - but clearly not. After a fairly exhausting fight and lots of WD40/ grease and a little blood (the wire mesh is sharp) I got the pods on.
Bought this for a 2008 Yamaha R6S. The product advertised is just for the spongy part of the air filter, but not the entire mount assembly. The filter itself seemed the same quality as the OEM. The hard part about the instillation is removing the old spongy piece because it is riveted between the top and bottom plastic piece. Once I drilled out the rivets instillation was easy, took out the old sponge, oiled the new one as the package said, and stuck it where it should go. The only thing I was worried about was I didn't have a way to hold the filter between the 2 plastic pieces, luckily I looked at the top of the airbox and there are a few pegs that seem to prevent the top piece of plastic from getting bumped around once installed. Overall I haven't had any problems and would buy this filter again vs paying about 60-70$ for an entire assembly when all you need is spongy filter part.