Well I know the title of the thead is "alternative choice to a VFR", but ...
I've owned a few bikes, and yes, <read some!> 6th gens suffer from a pre-vtec shutter is my best attempt at describing what you are most likely experiencing with your 05. Here's the skinny. I've owned 3 6ths and the only one that suffered from this was my 07. An amazing bike to look at, ride, and well-equipped for what I used the bike for, but in the end bailed on it <read prematurely!>. I've since owned an 02 and 03. Both transitioned silky smooth. Yes, these bikes had the "step" once into vtec, but it was just there. No studder, no vibes, nada; like you entered into a powerband with an instant change in exhaust tone. I think it comes down to the bike & fueling. Maybe your valves need adjusting, or you can grab a Power Commander.
I know some in-liners have been mentioned. Ever feel one pre-powerband? They can suffer from a similar fuel delivery issue causing some not-so-nice vibes at a certain rpm. As mentioned in a previous post, "Not a flat spot anywhere" is an observation of a somewhat global problem.
All said I'm now back to riding another 5th and loving it. This is my 2nd long-term vfr and plan on keeping her for a while. They do not look the best if you need to go the serious luggage route which is where your gen rocks! If you need a second opinion, or wish to evaluate a 5th, by all means lets ride.