Sprint Dialup Vs. Sprint APN?

[daninpompano]

So I was screwing with my phone and was in the connectivity settings (double click on the tiny "ev" with your stylus, then click "settings") and saw it said "Sprint Dial-up." I got curious, clicked settings, and in "Manage Existing Connections" I noticed that "Sprint Data" was checked with the number #777 selected. Well, out of curiosity, I changed it to "Auto Pick," and the connection it seemed to default to was "Sprint APN." So then I switched to "Sprint APN" and just left it, and call me crazy, but browsing seems noticeably faster.

Does anyone know what the difference is? What am I actually changing?