I have a Fisher-Price Nature Cradle one...it is earthy colors with a very cozy papasan styled chair. I used it when my daughter was a baby (now 3) and now with my 5 mo old and LOVE this swing. It swings both directions, multiple speeds, music and mobile. I am sure it holds the standard weights, but when each child is ready to be done with the swing is very individual (besides weight). SOme kids are more physically active sooner, making it unsafe. My daughter used the swing till she was much older, probably 9 months(?) because she was very light and small and didn't have an interest in trying to get out. My son now is 18+ pounds and is very physical, he will likely be done by 7 mo I would guess.
The swing has been AWESOME for us. He is a very sensitive baby and likes to feel cuddled and close all the time. During the day a sling and/or carrier has been great for closeness (and hands free for me!) but when we want to sleep at night, he starts in the swing and sleeps wonderfully. At first we had to be aware on his head not flopping nor letting his chin rest on his chest- and the chiropractor advised us not to let him slouch or let his head cock to a side for long periods- but other than that, he prefers the swing and sleeps better at the start of each night.
You may find one like this on craigslist or a consignment shop...you can just was the seat cover! I ahve tried other less expensive one and they didn't seem to like them as much...less cozy, less comfy and not as many features that the babies love...