Hi gatorguy47,
Both of these scores are outstanding performances - as such, you can likely apply to any Business Schools that interest you with either of these scores. At this level, there's really no practical difference between a 700 and a 710 - and Business Schools know that - so those scores are seen as the same. Since many Schools have publicly stated that they still don't use applicant's IR scores in any meaningful way during the application process, it's likely that neither the 8 or the 3 would mean much. That having been said, assuming similar Quant and Verbal Scaled Scores between these two Official Exams, I'd send the 700/IR8 (only because there might a few Admissions Committee members that would find the IR8 exciting).
If you have additional admissions questions, then you should ask the Admissions Experts. There's a Forum full of them here:
ask-admission-consultants-124/GMAT assassins aren't born, they're made,
Rich