Rode my 07 Standard for over 5 years, now on my '14 for about 2 months (and still riding it conservatively). These are my personal impressions.
Seat: I might be one of the few who has no problem with the stock seat. The '14 seems a bit narrower, and I feel I have a firmer foot plant because of that. Spec-wise, the '14 is actually 0.2 in higher (than the 2012). The ground clearance is 0.2 inches less on the '14. BTW, I'm 5'8".
Weight: The '14 seems lighter, maybe due to tranny changes. Surprisingly, the specs on the '12 and '14 are the same 613 lbs.
Handling: The '14 is more responsive - initiating turns seems quicker - it feels "lighter on it's feet". The wheelbase is 0.4 inches shorter than the '12, although the overall length of the bike is 0.2 inches longer. Maybe that has something to do with it.
Engine: Horsepower is rated the same, but my 07 had better pulling power from 0 to 50 mph. Engine braking is still there, but quite a bit less. It's much better behaved at slower speeds, but I miss it in the twisties and in the hills. I'll have to adjust my riding to use the power button more often, and I'm on the brakes more. Gas mileage: 10%+ on the '14.
ECVT: Forgive my terminology, but it seems 'tuned' to run in higher gears to provide better gas mileage. In Auto, from 25-45 mph, in either steady speed or gentle acceleration, I get definite vibrations in the floorboards and handlebars - like the engine in lugging due to being in too high a gear. If I twist the throttle a bit to accelerate faster everything smooths out. Shifting manually thru the gears also solves this 'problem.' I'm definitely going to have this checked out at my 600 mile service later this month. If this is normal behavior, I'm not going to be happy. DO ANY OTHER '13 & '14 RIDERS NOTICE THIS??
Windshield: It's OK, but even at it's highest position, it is well below my eyeline. Wind noise is about the same on earlier stock shields - not great. I had a Clearview on my 07, and will probably get one for the '14.
Storage: Front cubbies dimensions are different, and volume may be a bit less - my disk lock fit in my '07 with room to spare, it's a tighter fit in the new bike. Trunk: smaller, still easily handles two full size helmets, but it is two inches narrower. On my multi-day rides I packed the 07 to the gills, and am going to miss that space. For the first time, I'm thinking about a top-case. For everyday riding the trunk is fine.
Appearance: I like the new body styling much better. I like the looks of the analogue gauges, but I think taking-in all the data was easier on the fully digital dash. Color: Like many, I think Fibroin Metallic Matte Gray is pretty bad, but color is way down on my list of priorites.
I'm pushing 63, I'll probably ride the 650 for another 5 or 6 years. My '07 had a bit over 20k miles and probably would have served me well for those years. Basically, I wanted the new style for the rest of my 650 riding days. (I plan to ride my 400 thru my 70's

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