I'm thinking of upgrading the regulator rectifier on my 2015 XC Tour. I'm between the Rmstator rm30334 and the SH847 from roadstercycle.com. There's about a $80 difference between the 2 but i can't really tell why. I ride in the heat allot so I'm worried about the original RR on my XC frying up. Anyone here have opinions and experiences on these choices.