Hi Gear Junky, I am actually kinda a purist about overtones such as Ears mentions; in fact I'm one of those people who bitched and moaned a lot in the 80's about the sampling rate for CD's being too low.
That said, I may be able to detect the difference in frequency range on my soon to be DAW, I doubt very much that I could detect it on my current 1/2" analog 8 track machine, and I SERIOUSLY doubt you would be able to hear the difference on a cassette.
Also, even if you can hear the difference, the question is still whether the difference sounds good or bad. I plan on using the E-200 mainly for vocals and acoustic guitar. And frankly I have never liked the way my voice sounds on a really expensive mic like
the Neumann U-87. Too many high frequencies. Sure you can EQ them out, but I'm kinda old school - I say it's better to use the right mic for the job than EQ. For example lots of people (me included, although not in every situation of course) love the way old ribbon mics sound on vocals, and I guarantee those will not pick up 20K.

So, I personally may end up really liking the E-200 for what I actually want to use it for. I'm going to do a head to head comparison in my real studio with
the AT4050, so we'll see.
We tend to think that having a "low-budget" home studio is going to put us at a disadvantage compared to higher end studios, but we overlook the advantages: we can choose our gear based on *exactly* the sounds we like, as opposed to a commercial studio which has to be able to handle any situation that comes along. And a lot of times the less expensive gear may "color" the sound in a way that may offend purists, but may actually sound better to us. In other words you may not want to record classical violins with an E-200, but for rock vocals it might actually sound more pleasing to you than a mic that's good enough to record violins. And save you an awful lot of money in the process.
--Lee