Kegging is easier by far but you need more than just the keg and co2. 5 gallon Cornelius kegs are the most popular and u can get a whole set up (keg, co2 tank and beer/gas lines)online starting for about $150 or so. But in order for the co2 to diffuse into solution it needs to be cold. So you'll have to store the keg in a fridge or a converted chest freezer( a keezer) or dorm fridge the whole time. There are other options if you don't have room or money for any of that though. The tap a draft type systems get good reviews. I've got a keg set up in my old dorm fridge but am looking into tap a draft for something more portable. I think the kit come with three 1 gallon plastic containers that fit nicely on your existing fridge shelf and have a dispensing unit that takes a co2 cartridge for about $70. Extra containers are cheap , under $10 I think. You can force carbonate with the cartridge or naturally carbonate then use the cartridge for dispensing. The down side is you can't control the level of carbonation with this( although there are DIY threads here to rig it to a co2 tank and regulator).
I bottled for about a year and am really happy I switched to kegging.