I purchased this motorcycle, a 1982 GS450L, as my first motorcycle, and what a great choice it has been. I knew that I didn't want a sportbike (or "crotch rocket" as they are sometimes called), but I also wasn't too keen on a Harley. The old "japanese standard" style bikes, like the Suzuki GS and the Honda CB were exactly what I was looking for. And for bonus nostalgia factor, my dad used to drive a japanese standard (Honda CG 360T) when I was a baby.
I bought the bike through ebay and a local seller, who actually delivered the motorcycle to my door. I have had the bike for 2 years now and put 4 thousand miles on it.
Pros: it runs forever, as long as you keep oil in it. The engine seems pretty indestructible, and the carbs haven't needed any work. It's a cruiser style, which I like, and it's not too bad comfort-wise, especially for short trips.
Cons: The bike has had numerous electrical problems that have required a lot of work, and I wouldn't recommend an older bike like this to anyone who didn't want to work on bikes. Also, long trips get uncomfortable. And unfortunately it just doesn't have a good sound, it sounds kinda wimpy.
Overall: a great beginner bike, and a solid classic that will keep you on the road for a long time if you treat it right.