I'd like to take some responsibility for pushing the prices up on the true Egnater IE-4 with my youtube video.
Oh, and Jeff, I agree. It still blows me away everytime I plug in. It definitely doesn't sound the same as the M4's equivalent modules (which I also love). The IE-4 has something special in its singing, prominent midrange.
The Rocktron was made by Rocktron. It also has custom taper pots, so it sounds more normal with everything at noon.
The Egnater supposedly sounds better, but the knobs will be turned more left and right all over the place to achieve equalization.
Standard Rocktron price = $750-$900 ?
Standard Egnater price = >$1000 and growing