The only way to decide about the CMS with an OF1010 or OF1400 router mounted is to try one at a dealer.
In Festool classes I have used the CMS with both the OF1400 and the OF2200. My preference is for the OF2200. Personally I see no reason to use a router with less than 3.25 hp in a router table. On trips to Europe I have used the CMS with OF2200 many times. For an easily transported system it was very impressive.
Going back to when PC introduced the 7518, I have owned those. In 2006, when I bought my first Festools, I already owned 6 of the 7518. Since then I have added more of the 7518, in addition to my fleet of Festool routers.
I own 4 router tables with lifts in my shop, in addition to a large tilting arbor shaper. Cabinet makers working for me do hardly any on-site fabrication, so I have limited need for a portable router table. So currently I have not budgeted the purchase of the CMS.