It all depends on the brand but you are talking $100-200 for a good set, not a big deal like some seam to think. I like Pitbull but Vortex, Redline, and a few others are great. Make sure they are for your bike and have adjustable/fixed brackets. The spring loaded universal ones are junk and so are the short handle handy stand types.
If you are just going to use it for winter storage any will work. If you are actually going to use it by yourself with no help at an event you'll see a difference. Not to mention when you are doing quick changes and other stuff they are a little more user friendly and will last longer. I've seen the aluminum ones flex and drop bikes so I prefer the steel made ones. A few other benefits depending on the style you use on the front.
Plus they have Pitbull stickers on them which is worth at least 20whp for use squids and the chrome matches my swingarm...