Feels like I'm late to the party, but I'll still add my two cents worth.
For years I never had a single router... then I got the OF1400 and found an excuse to get 2 more routers.

One is a PC in a Hybrid Pantorouter and the other is the Makita 0701 palm router.
I just picked up the CMS-VL end of last summer and added the Incra Superfence over the holidays. The Festool fence is just 'okay'. It actually worked pretty well in jointing applications and fairly simple to setup with other bits. Where it sucks is repeat operations. If I had to switch between two different bits or functions I would have to go through a timely setup each time.
With the Incra fence I can have multiple operations set and switch between without setup time.
The VL is really handy attached to the MFT - plenty of workspace. I got the CMS set which comes with the sliding table. I haven't used it much yet but it's really helpful when you have wider panels.
If you want the mobility and/or the option of putting it away to clear floor space - my vote is strongly in the CMS camp. I can fold it up and stick it in a corner if need garage space back. Or, when I was working on hardwood floors, I moved it up to my dining room and was using it there. Same thing if I want to take it to my parents house to help on projects.
If you need a shop bound only router table and don't mind the permanent space loss then you might consider a different table. Not guaranteed to cost less but you might appreciate different lift features or fence options.
Switching back and forth between CMS mounted and top of work with the OF1400 is definitely an extra step. However, once you do it a couple times it takes like 30 seconds. It's less time to do that for me than switching bits.
I was recently building some shelf towers and had to switch back and forth. After the initial grumbling I realized that it wasn't that big of a deal.
And it helps to have my little Makita palm router for doing some simple edge work. Saves bit changes too.