You need the L/XL. Doesn't matter if your boots are the lowest profile ones out there. the S/M is a tight fit even with low-pro boots in 8.5/9.0.
15 NS Ripsaw . 14 NS Proto HD . 13 Gnu Space Case EC2PTX . 2013 Salomon Powder Snake
14 Now Drive . 13 Now IPO
14 Flow Hylite