ADLG uses 40 x 40 or 40 x 30 bases for all but foot skirmish and warwagons - the old DBx basing still works but that removes a lot of the fiddly small bases.
This is what I use for Sword & Spear now days, although I still have 60 or so pre cut 40 x 15mm & 40 x 20mm steel bases to use up. But I cut magnetic double depth and stick the two base together that way.