Activity centre/walker/jumperoo?

[ChocolateHobnob]

My DD is 4 months and am wanting to get her one of the above. Am currently deciding between the Mamas and Papas Sit and Step and the Fisherprice rainforest Jumperoo. (I know they do different things) There are also the LeapFrog and Graco activity stations and then baby walkers. I wasnt planning on a walker as I gather they don't get good press. Can anyone share experience of any of these, please?
Thanks!

we had a fisherprice hop and pop,which we found great, as it folds up for storage/transporting, we used to take it everywhere with us and it got more use than our walker did.it was about £50 when we bought it (3 yrs ago) and i sold it on after using it for both dc for £20)

Just bought Dd2 (5months) a Baby einstein activity station, she absolutely adores it and it has been worth it's weight in gold for how occupied it has kept her. She loves all the different toys.

Have got a jumperoo for ds, which he loves. It isn't very foldable, so takes up a fair amount of space, but works well for us. It seems to occupy him more because he can either play with the table part or jump, and probably spends equal time on each. And the music is actually quite catchy - not often I say that about kids' toys!