In a second..
My newest mare is a daughter of Be Aech Enterprise. I've talked to the guy (Rex Hester) that owned BH and he said well they are one of the harder horses to start they stay honest and give you their all, you just to work a little harder to get them to that point.
And the talent they have is enough for me to not think twice about the little bit of extra work involved. Look at all the BH foals out there winning money.
Just a few other than Gunnatrashya A Smart Enterprise Quarter Horse Directory - Surprise Enterprise
McEntire who at one time one Be Aech Enterpise and has trained many of his foals says "They can be a little harder to train when they're young, but once you get them done you wouldn't want to ride anything else. They're real feely, real sensitive and they like to look...but once you get 'em they're real solid horses."