I own both...a Honda Helix, AND an ST1300. Strangely enough, I ride a Honda SIlverWing pretty often as well-my sister owns it, and I do most of the maintenance and farkling on it.
Not to obscure the waters even more, but , IMO, the Helix and the ST serve two different needs. I use the Helix when doing short hops around town, taking wife to work, etc. It is comfy for a short while ( I'm 6'1", 180 lbs, 34" inseam), but not for long jaunts, although I have done a few of those on it too. It is light, nimble, rides like a champ, and handles great. Tires and maintenance are cheap on it, and it is VERY easy to work on. It accelerates nicely, and few, if any, cars or trucks can keep up with it up to about 40 MPH. It's not that much fun to ride above 60MPH. I added a Bestem Top box, and it IS a beast of burden! With it's understressed engine, and Honda build quality, they can last for decades.
SilverWing: I have ridden this quite a bit, and it's a nice bike, BUT, just not that different than the Helix. Still feels like well, a scooter! Yes, they are scary fast for a scooter, and are comfy for distance , if the kinda "hunched over" position is comfy for you. My sister rides her "SWing" from Norfolk to Canton, GA every year, alone, and loves it. She does long stretches of slab as well as some back roads. I have ridden it for a coupla hours, and frankly, it's not my cuppa tea. It feels a bit underpowered, and well, just NOT that different from a Helix. The one thing I was a bit disappointed in was the gas mileage....the ST ( riding two up) consistently got better mileage then the SWing ( one up). It is comparable to an ST in terms of maintenance.
ST1300: Comfy for a trip down to the store, or a trip across country. If you're considering an 1100, think of moving up to a 1300. Not sure how prices go, but I doubt you save much on an 1100.
The move from a Helix to an ST is a BIG one. The Helix is a joy to get on for around town rides, due to it's low size, and easy slow speed maneuvers...the ST sucks in parking lots! A lot of the folks here are correct, perhaps an NC700 or an NT700, or a DL1000 OR 650 v-strom would be a better compromise.
Enjoy whatever you get!