I use a CPE-2 Jobo with 2509n reels for most of my 5x4. I still have, and use my home made tubes for doing single sheets by inversion. There is also the 'taco' method for using a standard daylight reel tank.
Any of the methods work, it just depends on what your resources are, how many sheets you want to do in a session, and what seems most comfortable. It's the result that counts.