The smaller Honda Shadows are gonna be suitable for you without any problem. There tend to be a lot of these on the market. The 500cc bikes are going to be a little bit older and aren’t that widely available, but the 600cc and 750cc bikes are all over the place. They have a solid reputation, and the two people I know who own Shadows really like them.
And if you don’t mind an older bike, sniff around the Honda Magna. It is a fast bike, but without some of the quirks of a sport bike that can catch a new rider out. I’m riding a ’96 and love it. Fast if I need/want it, and stable at high speed, unlike some bikes which will try to vibrate you off the bike. Mostly though a good stable bike for cruising around at sane speeds. First thing I noticed about this bike in fact that speed control was trivially easy. I actually speed less on the Magna than I do in my Accord. The only downside to the Magna is that the tire size is odd, so you wind up paying extra special prices for tires, and usually need a week or two lead time on new tires. Which sucks if something happens to one of your tires.