One thing you can say about the C-Dory lineup is that they cover a wide range of models, uses, specialized areas. the extreme shallow draft, economical, easy to tow 22, the roomier 25, the fishing models, the deep v Orcas, inboard and out, the TomCat has it's special niche, the C-Rangers, their special niche.
The 21 EC's economical performance, but deep draft... I think it is alluring, but if I ever were to do a group cruise with C-Dory models, could it keep up.... at about 2/3 their cruising speed? Maybe in rough seas. Maybe the R25 will be able to do that.
My thought is that, right now, I am working, so go for the gusto with the R-25, then trade down later if economics dictate, or maybe even go to a 22 C-Dory for easier single handing and towing as I get older... So, I don't see a major exclusivity to any of the models in their lineup.
Anyway, it seems each model is uniquely suited to some aspect, and maybe not so suited to other aspects of sea use. So, I don't see alot of intermodel conflict, just ppl choosing different models over time to suit their changing needs and wants.
John