This thread sure resonates with me since I was in the same position in 2019. I had purchased my second FJR in 2016 (Cobalt blue Gen 4) and was perfectly happy with it. But, since life is short, I reasoned that before I stop riding (currently in my early 70s), I should experience owning what I anticipated was the "top of the line" in sport tourers... a K1600 GT Sport (silver and black with red GT graphics and Remus silencers). My reasoning at the time was after I get the BMW, I'll sell the FJR... no reason to have two sport tourers in the garage.
Well... here I am, two and a half years later and I still have two sport tourers. The FJR has just over 50K on the clock, and the BMW 22K. My problem from day one has been that the FJR does so many things as well or better than the BMW that I can't (or won't) sell the FJR.
I must admit, the BMW has two major things going for it... the shift-assist and the in-line 6. The motor is a smooth, silky beast with limitless (to me) power. What does the FJR have going for it... dollar for dollar, everything else... transmission, cooling system, throttle response, etc.
As far as maintaining the BMW, I'm fortunate to live 80 miles from the best dealership in the Southwest (Iron Horse Motorcycles in Tucson, AZ). They treat your bike like it's their bike. While dealer costs are generally higher for BMW than Yamaha or Kawasaki, they've always done it right the first time. A riding buddy has a Kawi ( the super charged SX SE). He's had multiple major system and fairing failures, and when he brought it to the dealer for his 30K service, was greeted with an invoice of $3300. Who knew they replace the fuel pump inside the gas tank as part of their "routine maintenance."
I should probably wrap this up... The bottom line for me is I love in-line engines, so an RT would never find a spot in my garage. To me the FJR meets or exceeds expectations better than anything I've owned to date. My present dilemma is I'm really intrigued by the new 2023 Triumph Tiger 1200 GT Pro. I may consider trading in one of my sport tourers on one in the Spring... which one you ask???