As for the performance thingo, that's not entirely true. It can actually make a difference in engine performance. Just cause MCM did a video on it and their results weren't that outstanding doesn't mean they're not that good. On some engine setups, they're almost required. The stock airbox on some vehicles doesn't suck in enough air under heavy load/on a modified set up which is where the pod helps (but obviously not a SCA one).
As for our builds, I doubt any of us would need a pod, but they do add a nice throttle note. You can get any pod filter, I'm sure brand doesn't mean anything (again, we're not driving Supercars so quality doesn't matter too much). I have a SCA one myself, and an adapter I bought off Res for $10. Sounds kinda nice, but I may be chucking my stock airbox back in however so the adapter could be for sale