Im lucky enough to have a few bikes ...
Warrior - V Strom 1000 - Triumph Sprint ST
My wife has a Vstrom 650 and a Katana 600 (i hate that bike but she loves it **shrug**)
If I could only have one bike .... Man I would hate it ... but I would prolly go with the Vstrom ... can do just about anything .... and with no luggage on I can keep up with just about anything in the twisties. While I don't share you affection for inline 4s ... Vtwins are my style ... I do get that itch OFTEN to blast around the lake and the Triumph takes care of me just great. I used to wad myself (6'4 250) onto sportbikes but they always killed my back. The sport Tourers are a bit more relaxed and comfy and still hustle through the corners just fine. I miss my CBR 900RR and my Aprilia RSV Mille but I don't miss the back pain. My V Strom is by far the most comfy bike I have ever owned. I can log 500 to 700 miles a day easy for a few weeks and not get worn out.
I will admit the FJR is a sweet ride ... If I was a one bike owner that was all street riding - the FJR would be on the short list. I live in BFE North Idaho so I end up exploring a lot of dirt - hence my Strom.