I liked the Graco Contempo Highchair.  It was easy to move around.  It was best when they were younger tho.  Once hold enough to stand alone, he was able to push the back of the way back so it was laying down.  Part of the problem for us tho is there has never been a restraint (other than car seats for a while) that my boys haven't been able to escape!

What I liked most was all of the adjustments that could be made and plastic seat covering that was easy to wipe off.  The thing that I liked least was that they were so easily pushed to laying by my boys.  Overall, I give it good ratings.