Salomon, alas, has largely abandoned the hiking market and specializes in climbing boots (including some very interesting ones, such as the trail-, rock-, and snow-friendly Pro Rock, for $219), or racing-style shoes such as the XA Pro ($80). Their Adventure Trek 7 ($160; www.salomonsports.com), though, has some of the techy-looking design of the Adventure 9. It's a backpacking-specific boot with leather and synthetic uppers, a Gore-Tex lining, and a proprietary Salomon sole (as I recall, the Adventure 9 had an excellent sole). Might be worth a look.
Otherwise, there are lots of good-quality, mid-weight hiking boots out there, boots that would fill the same niche as your Adventure 9s did. It's very hard, for instance, to top the L.L. Bean Cresta Hikers, a terrific buy at $169 and a terrific boot, too (www.llbean.com). These have all-leather construction, with a Gore-Tex liner. And the Cresta is regarded as one of the best-fitting boots around, available in three widths. La Sportiva's Storm GTX ($170; www.sportiva.com) is similar, with leather construction and a Gore-Tex liner. A nice boot, best for medium to slightly narrow feet. For something a little heavier, the Tecnica Stratus Bio-Flex GTX ($200) is a very tough backpacking boot, also coming with a Gore-Tex liner. Lastly, a really classic heavyweight hiking boot is the Montrail Moraine ($235; www.montrail.com), which eschews the Gore-Tex liner for thick waterproof leather and super-strong construction.