PainOfSalvation: You shouldn't regret it, i'd go for 1300x as well. 20€ price difference but you get 400MHz higher base clock speed, also XFR goes +200MHz so it hits 3.9GHz while 1200 XFR is only +50MHz and 3.45GHz. The only way i would pick 1200 is if i was on a really tight budget.
Does XFR even work on stock cooler? Because I think it doesn't.
The 1200, 1600 and 1700 are better value because they can be
manually overclocked to 1300x, 1600x, 1700x(1800x) values, using the default coolers. XFR is automatically disabled once you overclock manually.
Using aftermarket coolers, allows you to overclock them to 3.9-4.1GHz, at respectable temperatures, but anything higher than 3.9GHz is NOT guaranteed. Neither on the non-X processors, or on the X models.
That was the consensus the last time I checked, unless you can find a recent source(September or later) that claims otherwise. If you can find it, it would be great, as you would be making me feel better about overspending.