Ambush on the bottom side. Ambush exploded but then really disappeared just as fast. I think they made outstanding feeders but harder doing cows. They still had decent calves and bred back despite their appearance but not ideal to me. The topside I've avoided in the past because I didn't like the look but they seem to have outdone my expectations so they might be ok. You never know but maybe the mating of Daybreak to ambush created something better than both. I think The hp epd should be considered if you are planning on keeping replacements. The photo of Ashland on genex makes him look like he has a deeper flank & better hind quarter than most of the daybreaks. You never know but there's not much risk if you sell them by the pound.