I got the tripp trapp, having tried three other various sorts of boosters, chairs, attach to table type things etc etc and none worked with either the baby or our table! I can see the advantage of a tray (although I know you can get trays for the tripp trapp on ebay - no idea how good they are) but the outrageously expensive Stokke does the trick for us. IzzyMouse is on the small side (although not as wee as Tink) and it's the only thing she doesn't slide around in. You do have to be disciplined about keeping up with the adjustment though. Madame almost managed to launch herself out of ours a couple of weeks ago because I hadn't noticed the footplate needed lowering a little.