Well the 3017 is more collectible, will hold (or increase) its value better, has a smoother operating chronograph, is slightly smaller in diameter, and is much thinner. It has more classic styling as well, with some models having "scalloped" registers/subdials. The downsides are a less robust movement (no shock protection), chromed coatings that will rub off if you wear them frequently, hard to find parts for repair, a shorter power reserve (I think), and lack of date complication (this could be a plus).
The 3133 versions have more variety in styling, shock protection of the movement, stainless steel cases, easy-to-find parts, more modern/fancy looks like guilloched dials, longer power reserve, and date complication. The downsides are the date complication (I'd prefer it without), much thicker case while still being small diameter, and stiffer actuating of the chronograph. There are also bracelets made to fit the 3133 version.
Overall it's pretty obvious this boils down to the following question: are you buying this as a collector's piece to seldom or never be worn or is this going to be a daily wearer or at least in a frequent rotation?
Also keep in mind there are rumors a new 3133 larger strela (42mm) is to be debuted in the next few weeks.