ive neve kegged before but i did do an oktoberfest back in june, it sat in the primary for 2 weeks, and secondary for 2 more weeks. I bottled it and let it carb at room temp for 1 month and then drank half of the batch over the next few weeks, while the other half of the batch I "lagered" in my beer fridge for 2 months. WoW! Those 2 months of cold storage made a huge difference. Not only did the beer clear really well but it also gave a chance for all the flavors to balance out.