Hi all. I'm looking to replace my seat.on my 2008 Sporty R. I am looking at the Danny Gray big solo and the Mustang touring solo. I would like to incorporate a back rest if necessary, my 63 year old back might appreciate it. also a passenger pad when needed. Anyone have experience with either of these. I know comfort is subjective. (My brother rode a hardtail for years!) These aren't cheap so any help is appreciated. Best regards.