He LOVES it, (so did DD) and we couldn't live without it. We have the Rainforest one. It made it through many months of hard use with DD, (she was a jumping fanatic) and is still going strong for DS. Everything on it still works, it has been easy to clean from my experience, and it doesn't eat batteries as quickly as other baby gear has. (Big plus for me!)
We just bought the rainforest one from some friends of ours and DS loves it. I haven't taken the cover off yet, but need to soon because he has soaked it in drool.
Best $75 I've spent so far on non-essential baby gear. By far. He loves it and it's holding up beautifully. We only let him jump for about 15 minutes twice a day, but whenever he's not in it he stares at it and squeals.
DD loves it! We have the Fisher Price Precious Planet one. To be honest, we haven't even put batteries in yet lol! So no lights and music yet but she could care less as long as she can jump!
Re: if you own a fisher price jumperoo...