Last week I made the switch from cyanogen mod to fresh on my HTC EVO. The reason for my switch was two fold. First because of the inability of the gps to be able to find my location. The cyanogen mod worked beautifully with the exception of gps. It is a fast responsive Rom. Secondly I switched because I quickly become board with technology that does not change. The best way to renew excitement for your Android is to flash a new ROM.
The Fresh ROM is also a fast responsive ROM that I am very happy with. It is based on the HTC sense interface which I do enjoy.
At this time I think Fresh is a better ROM than cyanogen, however I will report further after I use Fresh as long as I used cyanogen.