Hi Brandon ,
Both SP78H and SP78UHL are " SHP " blank which is the abreviation of Super High Power , in reality the SHP blanks are thicker walled blank than those without " SHP " designate on them .
The same with TBL80/30RF SHP and TBL711/35RF , the former has thicker walled blank than the latter but I agree with you , for GT the TBL711/35RF is a better choise .
Jon .