DD2 is 5 months old and I've been given money from FiL to get her a baby walker (it's the only thing I can think of that she doesn't already have passed down from DD1!)
There are so many out there, and from reading reviews the constant 'negative' point is that the wheels don't swivel so turning is hard and it's also hard to manoeuvre on carpet.
Are there any walkers out there that have 4 swivelling wheels??
Or are there any you would recommend?
Doesn't have to be cheap - I've been given £100 although doesn't have to be all spent on the Walker.
This thread is a little old now so some of the suggestions may be out of date, but if you’ve landed here looking for recommendations, we’ve recently updated our best baby walker page with lots of great options rated by parents, plus it includes info to help you decide if a walker is right for your baby. We hope you find it useful. 
MNHQ