What to buy: Audio Interface/D.I./Cables?

[Shlogo]

Not too long ago I started looking into recording, and after a little bump stopped, but now I am starting again.
This time I looked up more stuff and tried to get a clearer idea of what I need.
Some time in February I'll be getting a new Spector Rebop (been saving for a while) and I'm hoping to start recording right away.
But I would like to get the recording equipment now so I can mess with it and learn what I need to.

Right now I'm using a passive Ibanez Gio 5 string and running it through some dirt pedals.
I'm not looking to run the signal through any amp before recording (so I don't NEED my amp since I'll be flying some times...).
And I'm not looking to complicate things too much.

After looking for a while I thought I knew what I needed but now I'm not 100% sure.
Here's what I THINK I need:
Audio interface and a D.I.
And here's what I've been looking at for both:
PreSonus AudioBox (http://www.presonus.com/products/AudioBox-USB)
and Radial JDI (http://www.radialeng.com/r2011/jdi.php)

My reasoning:
The PreSonus AudioBox looks like it's simple to hook up and start using.
The more I read it seems a D.I. cuts down on outside noise interference and the JDI seems like its pretty good for the price.
And I like how I can run my signal to my computer and my amp and the same time with the JDI.

But then looking at those I wasn't sure what cable would connect them: just a mic cable?

As for price I'm looking to spend $400-500.
And I'm not trying to do super high album quality, just some for fun/video recording by myself and some friends.

PLEASE correct me if any of this is wrong, if there is something better, etc.

Thanks!!

[longfinger]

I don't think you really need the D.I. for the purpose you're writing of.

On the Presonus Audiobox website it states this..
> Mixer control (blends the input signal with the computer playback stream for zero-latency monitoring)

So you can get zero latency monitoring from the outputs of the Audiobox.

[theory028]

I've used the previous generation of Audioboxes and they're good interfaces. I like the Focusrite stuff a bit more though. For recording right into the interface, the Focusrite sounded less sterile and shrill. I can't say for sure if there's a real difference because it was probably my bass/string/style that contributed to the tone change. It's more of an anecdote than anything.