When two boats share the same hull type — in this case both the Sylvan Alaskan 12 TLS 2008 and the Sylvan Alaskan 15 TLS 2007 are modified vee designs with aluminum construction — the buying decision usually comes down to a handful of practical questions: how many people are you putting on the water, how far do you trailer, and what does your tow vehicle weigh?
Bottom line: The Sylvan Alaskan 12 TLS 2008 and Sylvan Alaskan 15 TLS 2007 are closely matched on the specs that matter most. Test-ride both on the water you actually use, check current dealer pricing, and factor in long-term service access before you sign.