I've been thinking of trading my 2011 RT for a new RT or RTS. My question is, has technology been marching along with the new spyders having better steering, better brakes, fewer problems etc.. Or is a new spyder just like an old spyder, but with a bigger and more powerful engine? A test drive only lasts a short time and doesn't tell all. Owning a new spyder lasts much longer. How is the experience of owning a new spyder vs. an old spyder different, and is the difference worth and additional $15,000+?