I think more information is needed to answer this question. Like what do you want in a heifer? What is your end goal? Are you looking to start a herd or just show? If you are gonna breed her and raise a calf, are you going to raise purebreds or clubbies? What is your climate like? How much are you willing to spend to be really competitive?
Personally I can see the value in all breeds and can pretty much appreciate the different breeds for what they are. From a marketing standpoint everyone loves an Angus, and I love that they are easy to market, but there are a LOT of them out there and a LOT of good ones going to shows, so my drawback to Angus is often you have to spend more money to be really competive. I appreciate the muscle in Charolais and Limi's but they dont fatten as easy as some other breeds and thus I just to find em to be my kind of cow which is soft, deep sided, and soggy. Everyone appreciates the muscle and style of a Maine,and I love them to produce club calves, but I dont like some of the genetic problems being passed on in some of the real clubby Maine's that are often what we see in the show ring.
Now on to ones I recomend a lot. For young showmen I often recomend Hereford. They are often my kind of cow big volumed, sound, deep sided, and soggy. And you cant beat their temperaments and personalities. Drawbacks with them which is the same with any white faced cow is that they are more susceptable to things like pink eye so you really have to watch them. I also really like Shorthorns, well mostly just because I really like Shorthorns and they make really good mama's ussually. But lately I am leaning towards Simmentals. I just like their apearance, the big feet, big bones, etc.
But I think you have to figure out what you want out of your calf then compare breeds and decide which breed best exemplifies that, otherwise you are just gonna get everyone's favorite breed listed here and its not really gonna help you make the decision you need to make!