Landon,
It all depends on how hard you are going to use it. Both will cut a piece of paper when new right?
Take money out of the consideration process for a moment. What would meet your needs? In reality few "need" the high end steel. Few need multiple knives that address the same usage. But some of us have the passion, the fever of collecting. I too love the research aspect. Also, as a end user, not a tester if you will, I like knowing what is in my hands. I have actually been in a situation where the only thing I had that saved my life was a knife. The ONLY thing. Also, I have dressed elk in the field so when a guy like Phil Wilson speaks, I listen. I ordered a custom CPM 3V this week and knew from Phil's ground breaking work that the HRC from the maker was behind the curve on heat treat and was able to obtain a agreement to have it raised. The second run of Darrel's M390 blades for Knifecenter are interesting. I wonder if the first run was at 62 or if Darrel requested the hardness to be increased. If both CPM S90V and M390 are at the same hardness the S90V will out cut the M390 every time per testing results, although both are top tier steels. I really look forward to more makers using CPM S110V with their folders in the future. Oh...I too have multiple watches. It is a bad affliction.
Cheers...