So I'm in the market for a newer MBP. The current machine I'm running is a 2007 15" MBP, 4GB of RAM, 320GB 7200RPM Scorpio Drive. It's on its last legs. The display is failing and the processor is incredibly slow, even with Mavericks. (I actually downgraded from Yosemite back to Mavericks because it almost crashed the MBP.) I'm wondering how people feel about the 2014 15" MBP model vs. the 2015 15". I can get a 2014 with what I need, 16GB of RAM, 1TB SSD, Quad-Core i7 2.5ghz for $2,350 refurbished from the Apple Store. That's almost $500 less than this year's model with similar specs. $500 worth it just for the force trackpad? Or is the 2015 better in other ways I don't know about? Should I nab a 2015, or get the refurbished 2014 from the Apple Store? The most important thing for me is longevity. I want to have my next machine for at least 5-7 years. I know you can't "future proof" technology, but is the 2015 more "future proof" with the force trackpad? Thoughts?