Hey Swany,
For what it's worth, I've heard nothing but positive things from the goosegetter. I've never been around one in use personally though.
You can get 80 min. CD's, which are a step up from the 74's. You really can't compress the file from where it's already at. To play in a standard CD player, you need to have your goose sounds as a "wav" file. They are large, and there's not much you can do about the size. But that's what's great about a CD player. If you can run it within arm's reach, all you have to do is push a button and it starts over.....much easier than flipping tapes and waiting believe me.
Tape or CD, they both sound like a goose. The speakers are a big addon, considering it can extend your range considerably. As long as the geese hear your caller, they're bound to come over for a look. If you're already sure you're going to spend the money on the caller, get something LOUD first...than go for ease of use.
My $.02