I don't have a whole lot to input into this discussion as I've only ever owned greenies - not something I'd recommend. I found that I end up spending a lot more time training and a lot less time having fun with greenies! It pays off eventually, when the horse gets super broke...but it's intense for a year or two.
And then there's my current horse, who I love to death, but came to me barely broke...and it's turned out that he has a genetic disease that essentially renders him a high-maintenance pasture pet/liberty horse. I hope to attempt to restart him in a few months/a year...but who knows. I had high hopes for him since he has great conformation, appears super sound physically, a wonderful personality, and just had "a few" mental quirks that I figured he'd get over with training.
He's slowlyyyy coming around and becoming pretty safe on the ground, but I have no idea when/if his body and mind will ever be able to hold up undersaddle.
He's wonderful to be around and I love him to bits, he's in his forever home, but he's not turning out to be what I thought he'd be when I got him as a prospect...
Anyway, I mostly have an opinion about this statement:
- Have a better bond with him/her
I don't think this is really true. I strongly feel that you can have just as strong of a bond with a "pre-trained" horse as one you train yourself.
Two of the horses I've had the strongest bonds with were ones that were completely trained. They were both the type that needed a buddy, I became their buddy, and voila, super deep bond.
Out of all the horses in my life ever, I probably have the strongest bond with my current gelding...but that has nothing to do with his training. Like I mentioned, he has a genetic disease that causes him a great deal of muscular pain if it isn't handled correctly - he strongly associates me with relief of that pain and, therefore, has bonded very deeply with me.
He's quite green, knows the very basic basics - I didn't break him out or anything so a lot of what he knows didn't come from me, but he is very deeply bonded with me.
Anyway, all I'm saying is that all horses want confident, fair, leaders who take their opinions into consideration.
If you are that kind of person with your horse, any horse, trained or not, is eventually going to want to bond with you.