It definitely depends on the dog and it's hard to generalise based on sex. In my own personal experience just with boys I've had one very biddable boy and one unbiddable and very difficult to train one and the girls are equally as different from each other as they are from the boys.
I now have 2 bitches and a dog and of the 3 of them Rodaidh is the most biddable but he's also quite soft, he would shut down if he had any hard handling. When he was younger he often needed a lot of gentle 'revving up' to get him going when he was having a stresshead moment, he does not have that real driven edge that Caoimhe does but he has become a lot more confident as he's got older.
Caoimhe is bright, fearless and very driven, she'll tackle anything and has a real 'yep I can do that!' attitude but at the same time she's very focussed and fun to handle. I would say a novice handler would struggle with her as she is very fast and quick-thinking and has a real mind of her own but I absolutely love working with her. I find her easier to train than Ro was at that age because she's so keen and I don't have to worry about overloading her.
Tilly is very independent, she's well trained and very intelligent and is by far the least biddable of my 3. If she doesn't want to do something she makes it very clear. I'm used to her and she to me but with other people she can be a cheeky mare and she just won't listen to them.
To me an honest dog is one which will always do their best and is guileless. Rodaidh is probably a bit too honest and ends up stressing himself and Tilly's the opposite and couldn't really give a monkey's
Personally if I'm looking for a dog to train up I look at what's available and take each one on its individual merits, unless there's a reason why you have to go for a particular sex I would look for other traits in individual pups first. When I was looking for the dog that turned out to be Caoimhe I was looking for a bold, outgoing, driven pup from the right breeding which didn't vocalise, moved nicely, had a friendly, inquisitive personality, had a natural interest in retrieving and interacted well with people and I rejected a few before I found her. Looking at the parents, any older siblings and related dogs can give you a good idea of how a pup may turn out although obviously there are never any guarantees.