I've never had a truly good hunt over anything's but Pointers.... REAL old school liver & white Southern Pointers, not those far ranging hyper-assed little English Pointers that the guys on horseback want. The only problem I have, and I think I touched on this here before, is that if you want a truly TRULY good bird dog you can't love on them all the time. And I just love dogs too much and get too emotionally attached.
The best Pointer bird dogs are basically emotionless, they aren't "pets" and they don't know or understand "love".
I've hunted over setters and brittany's, and they are pretty and can occasionally find a bird, but picking cuckleburrs out of that fur is a drag, and if you're truly into seriously busting quail I don't think any other breed can do the job like an ol' square headed shorthair pointer. There's just something in their blood.