I owned a 2015 M109R boss since new and just bought a 2025 Rocket R. I love both bikes. They are very different which means it's not fair to compare them. The suzuki is more of a true cruiser where the rocket is a hybrid IMO. The lack of updates for the 109 with it's analog everything makes me think it is a more reliable, old school type of bike but the rocket does put more smiles on my face when I ride it (mind you I just got it). At 5ft 9inches I am more comfortable on the rocket, where to make the 109 the right fit for me I needed handlebar risers, corbin seat etc. I don't have many miles under my belt with the rocket but known 109 issues myself and many other s have had are clutch cable issues, clunky transmission...hell you really feel every shift.... and subpar brakes.
Would I keep both if I could? yes