Lines and why?

Just for fun I figure I would ask this ? to everyone. What bloodline of dogs do you like the most. Now this could be the dogs you feed now or have feed, crosses that you like, or bloodlines that you would like to have. I'll start.... I was introduced to these dogs by a man that raised Eli/rascal dogs. He swore by it. I worked his yard for awhile and learned everything I could about care and diet then moved after a falling out with this man. Now I knew the Eli/rascal dogs well and while they are good dogs I decided to start my yard with jeep/red boy with Eli outs and Eli/jeep dogs. Not only was I impressed with the style and performance of the dogs off this cross I realized that the blood would cross well into other dogs from different lines. So I have ran my yard of crossed dogs for several years and now have a chance to cross it again to line breed to 50/50 and 3-way crosses of jeep/rb/Eli dogs. I have also been lucky enough to raise impressive dogs that people look to cross into other lines. I look forward to see just how these battle crosses and 3-ways will do. Now your reason for feeding a line maybe to performance, producing, both, or crossing to start lines just interested in what drew you to a line and why?