Threaded ball lock disconnects will make it easier for you to switch from corny kegs back to commercial kegs. Kegconnection has a kit that has all the pieces you need in order to do this.
Here. (Midwest has all the pieces as well just not put together as a kit. Just do a search for mfl.)
Kegging homebrew is the bee's knees. Bottling is a PITA. Just be sure to sanitize everything well and get some keg lube for your o-rings. Try not to aerate your brew too much when racking from fermenter into the keg.