I would take a neo 10 and neo 3 over a fullrange driver any day. they are much smoother. I have a neo3 right now and it is so smooth....very nice to listen too.
Do you mean smoother in terms of frequency response? If so, EQ will go a long way to put these two different types of drivers on an equal footing (as far as the sweet spot is concerned). Other parameters to consider are of course dispersion (1-0 to FR), detail resolution (1-1), sensitivity (2-1 to FR), dynamics (3-1 to FR) and SPL capability (4-1 to FR...?).
I like the simplicity of full range and no xos. Thus the reason i do both GR stuff and fullrange.
LOL, I wish space and budget would allow me multiple systems - I need to get it right from the beginning

I'm also attracted to the simplicity of FR and XO-less systems but if the Neo10 is *much* better than either of the TB and SV, I'd consider changing direction.
Only if the neo 3 could get to 200 hz.. that would be great... One smooth full range ribbon subbed with a low end driver...
That would be the RD-models from B&G