Hi Jason,
The Eheim Classics now come with a large single media basket. Mine came pre-filled, but I did have to take it all out to rinse off the considerable amount of dust from the media. Still, having it come already set up will leave no question on how to organize the media. This basket is not partitioned nor does it consist of interlocking smaller baskets as is the case with some of the other models. However it is easy to work with--you simply layer the media and rarely will you have to mess with it--all I ever have to do is lift up the basket and dump the water out of the cannister to get rid of larger debris--which is always successfully filtered out at the lowest level of media and due to suction stays in the canister when you pull up the basket. I probably wouldn't even have to do that if I weren't so clueless and could somehow figure out how to not overfeed my fish. There is no noticeable bypass.
And now they also come with two double-tap connections, one for the inlet, one for the outlet, so that you can detach the filter easily from the tank for maintenance. Anyway, I mention all this in case you'd come across some reviews saying what a pain Eheim Classics are to clean or to maintain. There are many such comments and reviews out there but they are outdated, and even if Eheim hadn't changed a thing, Apistomaster said to use media bags and you get same ease of use that way.
As a newcomer to cannisters I know I let those outdated comments scare me away from the Classic and got a Rena XP3, which just never worked well for me. Now I'm running the 2213 and the Eheim Ecco 2236 on my 40 gallon tank. I don't need to be running two, actually I think the 2213 could handle the tank all by itself, though it's the smallest of the Classics. But when I go to set up my second tank & divide my stock, I will have a fully cycled filter available to get off the ground running. (Ecco is also awesome--but Classics have stood the test of time which is why I had to try one when I decided I would go through with doing a second large tank eventually.)
One more bit of advice from a newbie, when you get a chance, keep spare parts on hand...maybe stuff like extra hoses or taps, clamps, even an impeller. Just in case you make a mistake setting something up or a mistake with maintenance, you don't want to lose all your carefully cultured media while you wait for spare parts to arrive.
When I set up my Eheim, somehow I really goofed and made the inlet hose too long, which made the flow slower than optimal. It was totally a freakazoid mistake--my two year old was running around and I guess I got distracted...who knows, with me. Anyway, I finally got around to shortening it, but in the process, did something to cause the doubletap to be leaky after struggling to get a stuck hose off. So, I have one on order. Fortunately, I have only a slow drip. Kinda like my brain.

And I heard some people complain they blew a clamp. I personally don't see how, but just in case...I'm putting those on my next order. Classics, if set up well, shouldn't need too much maintenance, though. So don't be worried just because I'm incompetent & had to mess with mine.
Sorry if it's all too much information...that's my specialty, alas. But not a day went by after I got the Rena that I didn't bang my head against the wall wondering why I didn't listen to Apistomaster to begin with! I guess I let the lower price of the Rena and intimidation at everything about the Classic being for "experienced" aquarists scare me off. The Rena does have a solid feel to its components, and it does seem to work very well for a lot of people. But I had horrible bypass with it and I had set it up exactly as you're supposed to, with the Rena media.
Tanks: SeaClear Acrylic 40 US gallons, Eheim Ecco 2236, Eheim Classic 2215, Fine gravel & EcoComplete: 3 Albino Aeneus, 4 Green Aeneus (NOT Brochis) 6 Peppers, 3 Sterba, 1 Elegans, 10 Danios, 3 panda cories, 1 cichlid.
5 gal betta tank: 1 male betta
50 gallon SeaClear Eheim 2213, Eheim 2215, fine gravel: 3 baby goldfish (2 Moors, 1 Oranda in QT)