Going above 1600MHz requires overclocking in most cases, since the non K series are extremely limited as far as overclocking potential goes it may not be possible to use higher speeds. There is no need for a K or Extreme series though, they will work fine in all systems, they just might not be able to reach the rated speeds.
I would suggest not going above 1866MHz (1600 even) as there is absolutely no noticable difference in real world application. Anything faster than that is for tiny differences in synthetic tests, and world records.
Here are a couple kits I would consider. http://www.newegg.com/Product/Product.aspx?Item=N82E16820104275http://www.newegg.com/Product/Product.aspx?Item=N82E16820231495http://www.newegg.com/Product/Product.aspx?Item=N82E16820231460http://www.newegg.com/Product/Product.aspx?Item=N82E16820233183http://www.newegg.com/Product/Product.aspx?Item=N82E16820144493
All those were selected based on a good color scheme for your MB as well
be careful with some of the taller kits (Geil, Kingston) if you have a large CPU cooler, as they may interfere with it.
I personally have the Kingston's and highly recommend them, the Corsair Dominator GT line is also known as one of the best ones out there.