I use a center stand thet I believe is made by Rivco. It is sold at eglidegoodies.com and other places such as ebay. It works very well, I use it a lot at home for storage and in parking lots. I have no trouble lifting the weight of my Road king which with the tour pak is over 800 pounds.
I also have a RIVCO, the adjustable model designed for the lowered bikes, and while it does work it isn't the simple "step on the lever and pop the bike up" device that RIVCO made it sound like. Some folks have had excellent results like 103_RK, and others have actually returned them because they couldn't get the bike up on the stand without resorting to things like rolling the tires up on boards first. I've heard some that claim the ability to pop the bike up onto the stand in flip-flops or even bare feet, but my 170 lbs won't come close to popping my bike up by just stepping on the lever. I need to grab the saddlebag crash bar and lift up and back while putting all my weight on the lever, and I don't always succeed on the first try.
I think the biggest issue with any of these devices is the fact that they are mounted to the frame crossbrace (dogbone), which tends to be bent, twisted, and possibly not very consistently located. Small differences in the approach angle of the feet of the stand make a huge difference in the effort levels. Of course, there is probably a good amount of variation in the actual stands as well. Combine the variation in the stand with the variation in the frames, and it's easy to see how one person has no problems while another is in danger of developing a hernia. All I can suggest is buying one with a money back guarantee, so if it doesn't work as described you can just return it.
I will say this, if you can find a center stand that works well on your bike, it is a great addition. No more hauling out the motorcycle jack to clean the wheels or store the bike for winter. It's always amazed me that H-D doesn't include center stands from the factory. Every bike I've ridden or owned since 1966 had a center stand until I bought my first Harley.
Oh, one other note. If you like the idea of a center stand but not the effort required to use it, check out a BMW. Electro-hydraulic center stand, just push a button.
Jerry