What's the best bull for Texas heat to cross with Longhorns?

My plan:

 

I am going to cross my Longhorn heifers for the first 2 or 3 years, and if the horn and heifer look great switch to my Longhorn A.I. program

 

Therefore I am looking for:

 

1. Young bull 5 to 10 months in age
2. Low birth weight
3. Can handle the Texas heat
4. Forage raised bull

I have heard good things about Brangus.   Any recommendations?   Or anyone out there selling one?

 

Thanks,

 

 

Mark

What's the best bull for Texas heat to cross with Longhorns?