So it's a brand new trib, with warranty? I'd verify that with Aire myself before I trusted a 5 year warranty on an 8 YO boat, even if it was still "in the plastic".
If it's legit, I think the trib hull design is better, especially for fishing. But if there is much doubt I'd probably go for the RMR. It just sounds suspicious to me.
"If you dont do it this year, you will be one year older when you do"