Hey Bob,
It really depends on your definition of "better". If you're looking at mid-priced stuff, a lot of guys (myself included) use the Focusrite Voicemaster Pro, which retails for about $650, but you can talk many retailers down to about $600. If you can tolerate the price, that would be
my to recommendation under $1000.
I don't like the 528E at all, and that's no secret. However, the 528E is rock-solid, and easy to set up. It also has an outstanding EQ section. I don't like the expander at all, and the preamp is solid and clean, but not great.
The Eureka is a fine unit also. Great preamp, but no expander/gate. In fairness, the Trakmaster also has no expander/gate. Both will require an absolutely silent room to get the most out of them...Or software processing after you record to clean up the noise. The only reason that I suggested the Trakmaster, is because of the low price/high quality...But it's only a good preamp, certainly not a solid processor. The Voicemaster Pro is absolutely worth the extra cash...You just have to decide if you can expand your budget for it.
If you want to do all your processing before it goes into the PC, your best options would be the DBX 286A ($200), Symetrix 528E ($500) or Focusrite Voicemaster Pro ($650).
If you want to do most of your processing with software, the Trakmaster will have a cleaner sound, whereas the Eureka will have a warmer sound. Between those two, the Eureka is probably a better buy and will do more for your mic. But IMO, the Voicemaster Pro is absolutely worth the extra on top of that. I think, to do any better than the VoiceMaster, you have to spend considerably more.
Look at it like this: The Eureka is a great
preamp that happens to have some good processing attached to it. The Voicemaster Pro is a great
processor that happens to have a good preamp attached to it.
Another perspective to consider, is the sound you're going for. If you want that big, fat, boomy, squashed "radio" sound, the 528E is probably what you want. Or the 286A...Or the Aphex 230 for about $700.
The Voicemaster Pro is a much more natural sounding box. You
can get that fat "radio" sound from it, but it's not easy. It's very good at helping the sound without
becoming the sound, if that makes sense.
And then...There's the AirCorp stuff, which I know nothing about. Jeff Laurence swears by them, and will tell you all about them, if you ask. Jeff knows his processors, that's for sure! If he says it's good, it is.
Sorry to write you a novel, but I want to make sure you're happy with your purchase...There's nothing worse than spending a chunk of cash on something that doesn't deliver the results you were hoping for.
The bottom line is that there are very successful people using everything mentioned. You just have to decide what is going to give you that giddy feeling inside.

If you wanna chat more, or need help getting set-up, e-mail me at
[email protected]
Emmett