The best (free) advice that I can give you is,..."Unless you have a predisposition towards owning a particular kind of running dog 'type' or a yen to be around a critter that pleases you visually,...perhaps THINK carefully about the actual quarry you want to capture and the geographical area that you intend to use the dog in'..
I say this because,..for me,.personaly,..the 'goal post has suddenly been moved',.and what I once required from a working partner is no longer needed...
Its a bit like last seasons 'must have' fashion accessory,..
Best to give such matters some serious thou