Strollers: Exersaucer

Exersaucer/ Activity Center Still Worth It for an Almost 6 Month Old?

I couldn't make up my mind about whether or not to buy a walker/ jumperoo/ exersaucer, and now my baby is almost 6 months. He is 21+ pounds and 27 inches tall. I think he will really like one, but the weight limit on most of the bestselling products of this type is 25 pounds, and the height limit is usually 30-32 inches. Is it still worth buying one, and does anyone have a specific recommendation? Thanks!