I have no experience with the felder router spindle but I did recently migrate away from my dedicated router table to do most profile work on a shaper. What I have found is that I still like having a router table for dados and grooves in small stock, as well as for small freehand work and tight radius curves in small pieces. So I have a router "table" that I can mount my router to, and I clamp to a bench top when I really need it for these scenarios, then I hang it on the wall and use the shaper every other scenario. Unclear if I could dados and tight radius pieces with a shaper+router combo, but its saved me about $1800 not having to get a router spindle and various fence upgrades to make small parts feasible on the shaper+router spindle.?