The best Top Box you can buy for under £100 is the TaskMaster 3 over 3.
Dawn got me one for Christmas and its just the dogs bollox, but its ONLY the 3 over 3 thats this good.
Initially the wrong thing was supplied and we ended up with a £150 box by mistake, but I took it back because it was just rubbish, the draws felt they were opening on gravel.
Over the last year at shows etc I've been trying drawers on more expensive kit like Teng etc and they are all the same, ropey as anything.. but for some reason and no one can offer an explanation the Taskmaster 3 over 3 top box is just superb.
If anyone wants one let me know and I'll get one on my trade account at the local Partco.
Available in Black or Red