Most males get on with bitches, largely because the bitch is usually very much in charge. My boys are so much bigger than my parent's bitch - but she rules the roast with them and is younger than them. The normally very forward Pip waits his turn for cuddles when she is around. Fletch, totally toy obsessed, won't even go and get his ball off her (she takes it from him and keeps it)! To a human she is a bit of a wimp at times, to male cockers she is obviously Maggie Thatcher
(Only Fletch is entire, Molly and Pip are not).
However - two entire males, kept separate from an entire female during her season within the same household, can really fall out and stay falling out. If you want a bitch puppy, you really have to consider very carefully how you will work the relationships between all your dogs when she is in season. It's not something to be considered just because your boys get on with a bitch - if you want an entire female and two entire dogs, it is a 'living' choice in the sense of what do you do every 6 ish months.