Sintered base is a must on a pow board. Only time I would say it doesn't matter is for a beginner that won't notice the difference and on park boards that are going to get destroyed anyways.
14 NeverSummer Prospector Splitboard . 14 NeverSummer Proto HD . 13 NeverSummer Cobra . 13 Gnu Space Case EC2PTX. 11 Nitro Team Gullwing
14 Now Drive . 13 Now IPO . 13 Salomon Hologram
14 Flow Hylite . 13 32 Binary