Let me guess you're the Pro knowing it all? Ok now lets get real.
I don't think I'd ever use the word "Pro", although I have written, performed, recorded, mixed and mastered my own rock album with a Macbook Pro and Logic and it is for sale, so let's say I have at least a little bit of experience in this area and I've been a high-end audio fan for about 18 years now.
I don't really have any issue with Apogee. Their products are nice enough and to each their own if you prefer them (although one wonders why they use USB on many products if they want to be considered high-end; anyone serious about recording music probably ought to consider Firewire over it; it's not that hard to get). But in general, I simply cannot fathom why anyone would want to record with an iPad or iPod. They are limited in both their CPU power and more importantly the amount of storage on them and a 10" iPad is not much smaller than an 11" Macbook Air that can easily accept additional storage if needed. A 13" Macbook Pro starts at around $1100 and that's only a few hundred more than an iPad. You're going to need something more than an iPad to finish any serious project, IMO (i.e. I don't consider Garage Band the best LAW to use when there's Logic, Cubase and Pro Tools out there that can run on a nice portable Macbook.
In any case, if YOU want to record with an iPad, hey more power to you. But it seems to be a case of catering to the masses that THINK they can make music more than serious musicians that actually plan out their recording sessions.
Some people don't care about plugins they like hardware and want to spent time on software as little as possible.
If they like hardware why are they using an iPad?
Is Apogee a joke? Ever used an Apogee product? The symphony i/o is my favourite i/o system ever build!
And what does the Symphony run on? An iPad? No, it requires a Mac Pro to plug in its PCIe card.
Or are you telling me a Pro can only make music on a 3k laptop/desktop?
No, a Pro could probably make music with rubber bands and tin cans (I've got some tracks by Pink Floyd that did that). That doesn't mean it's desirable to use an iPad over a Macbook Pro in a portable situation. Now I can see using the iPad or even an iPod as a touch-screen remote control in the sound booth or something networked into a larger system. But what's the point of recording with it? You aren't going to make your entire album with an iPad so you're going to NEED more equipment anyway. So why not just do it with one piece and be done with it?
I can envision this scenario where maybe you're on vacation and you have your iPad with you and by golly you realized you just happened to bring your Apogee Quartet with you and you feel inspired to sing a song by the Lincoln Memorial or something? Heck, forget the iPad then. If it's going to be that kind of scenario you need an IPod instead (pocket size), along with a pocket sized Apogee interface and a pocket sized quality microphone. Otherwise, a carrying case with a Macbook and your Quartet, etc. would do just fine.
Overpriced? Everything in this world is overpriced. Buy crap like Behringer etc. now thats overpriced. Why? because its build to sell cheap not build for quality. It shouldn't been build in the first place.
Apogee delivers quality so yes this will cost you a little extra.
Crap like Behringer? Personally, I think some of their microphones are freaking out of this world amazing for the price they sell at. I ended up using one quite a bit on my album as it was very directional and didn't pick up the rooms I was recording in, negating the need for a dedicated sound booth and yet the vocals are crystal clear. I can't ask for much more than that. It also had plenty enough range to double recording acoustic guitar. Spending more wouldn't have gotten better results, IMO.