You will probably find the 2 top quality with £20 difference are from the same supplier.
I used an autocraft battery tray, direct from them, very good quality but I still needed to do a small adjustment on it. Wouldn't hesitate in using another though.
Keep an eye on autocafts Facebook page, they are making a lot of new panels at the moment, I may be wrong but I think a lot of the products listed as top quality on the various sites are made by autocraft, someone correct me if i'm wrong.
As others have said, schofields are good.