So looking at the options in general
UD60 $14k
Fusion 60/14 $17k
Dyna XD60 $18k
Dyna pro60 $15k
Seems like bang for the buck with the ability to customize the fusion set is looking good. Clearly Eddie has beat the shit out of his UD60s and they have done great and are a bit cheaper. Still love the features on the Dyna XD60 front. Still haven't looked at Currie. On the Fusion website looks like they are 8-9 week lead time which I'm sure will change by the time I can swing it. I just really like that Fusion let's you pick length and bracket for no extra cost. If I decided to go genright 4 link rear I could order that with the brackets ready to go. My wife keeps laughing at the fact I'm shopping for axles that cost more than her entire car brand new haha
The only real benefit I can see to go wide is to run wheel with less back spacing. If you were to get a Dynatrac axle, you can custom order it to whatever length you want. The biggest downside to custom length axles is that you have to order custom length shafts. AS IN, if you were to break a shaft, you are SOL until one can be made. Also, having run both, I can tell you that I would get a standard ProRock 60 over an XD60 and mainly because you can install an EVO high steer kit and have your ram installed like it really should be - attached to the knuckle!
Aside from that, I'm glad to hear so many positive reviews about Fusion. Wouldn't hesitate to run Currie too so long as the rear is a full float.
Oh, one other thing to consider are the brakes that come with the axles. I have NEVER been impressed with the puny brakes that come on Dynatrac axles and have been super impressed with the massive ones that come on UD60s. Not sure what come on Fusion but that would be something to consider in my book.