GUEST,van lingle:
                Save your money, Bud. I have the Rolls GCI 404.
Complete waste of space. Far too noisy and unreliable. Unless you're going to keep it external then you'll need to shop around for the right fittings and probably modify the housing to fit in your tower. Trust me. It's garbage.
The Samson sounds like a good idea though. They get great reviews.
As for your mics... Until we learn to talk Digital, they're all analog.
The Samson has a built in audio interface which converts the signal to digital
You can buy an Audio interface cheaper than that Rolls and plug your mic. into that.
"Line in" is good enough for the vinyl. I couldn't get my Rolls to handle that.