Having just got a wonder new new Woosh Santana (more anon) I need recommendations for suitable panniers. Neither my trusty Carradice nor my Alturas will fit as the rack tubes are too thick and the clearance between rack and battery is insufficient. What bag or bags would go over the rear rack safely without falling off and allow enough storage for a laptop, change of clothes, a few tools, rain gear and a D lock? Must be reasonable capacity through not looking at long distance trekking style capacity. Willing to spend extra for decent quality as bags likely to get abused but not looking designer or silly money.