I personally admire and appreciate both Biggs and Fox. I have learnt a lot from them - I was not privileged enough to be a pupil of their's since they were well before my time, but reading about them and hearing them in recordings has taught me much.
As much as I appreciate Biggs, I will say that since he abandoned the Romantic camp and confined himself to the Orgelbewegung this was probably the reason why I think Fox is more well known. Fox appealed to a wider audience. He made the organ more accessible to the listener.
In my opinion, we as organists cannot pidgeon hole ourselves to only one aspect/era/period etc. of the organ, especially during these most challenging times for the instrument. The more versatile we can be, the more appeal we will have, the more we can do to promote the magnificent instrument. This is why I admire both of these great gentlemen because they teach me how to be more versatile. If you can somehow become a combination of both, that is the ideal.
I cannot see myself sticking to only one aspect of the organ. It's simply not possible for me because there is so much beauty from every period and genre. If I stick to just one genre in my recitals, my listeners are losing out and so am I as the recitalist because I'm closing myself from so many wonderful works. It's been my experience that my listeners prefer a full menu. And let's face it, as delicious and delectable filet mignon is, we will get tired of it if we eat nothing else but that, if it is served to us all the time, every day. There is chateaubriand, prime rib roast, lobster, etc. which are just as delicious and delectable.