Know what your end goal is, what kind of budget you want to dedicate, and what you want your intercooler to do before purchasing. If you're going to create a canyon carver or track car, maybe tube & fin like mountune fits the bill for like $900. If dragging or autocrossing the car, that giant CPE Delta core for $700 is great or it's smaller $600 sibling (or its Steeda twin) are wildly popular, even for daily drivers. Or, for a daily driver you don't want to spend a ton of cash on that gets the occasional highway onramp pull, maybe a $450 Depo Racing is what you're in the market for, which is also a great product with a huge fan base and performs just as well. So, decide what you want the intercooler to do first, then start shopping around.
As for Cobb: it's overpriced for what you get and doesn't perform any better. I had a mountune, sold it, was waiting for July 4th sales to get a CP-E lightweight, but am leaning towards the new Mishimoto. I like it's bigger than the lightweight, yet smaller and much lighter than the delta core. I like it keeps all the stock shrouds so air is properly directed through the intercooler and radiator and not around, as I don't want oil temps creeping up when I road trip. Price seems right. Decisions decisions...