Just a couple of points....
If you do the math, the 2000's will need about around 24 watts for you to experience a sound level of 86db at a listening position about 10' back from the speakers...ok...now lets add some safety factor...say 6 db for peaks and you are at 100 watts....and nothing wrong with having more than 100 watts...more is safer than less. If you listen louder than 86 db...then add more watts....if you listen lower...then still stick with 100.
Now, as to the Crowns....since a number of the guitar stores sell them with a 60 day return...you can try them easily. Here is my impression of the XLS2000 which I owned for a while....powerful low end but not detailed....massive soundstage in width but zero depth....ever so slightly bright on the top end....slightly brighter in the midrange.....overall sound presentation is forward and not laid back. Pretty good sound for under $500 but if you are willing to spend more, you can do a lot better, especially if detail and soundstage matter.
But, since it is so easy to try them and get something else....Nuprime, PS Audio, CherryAmp, VanAlstine....there are tons of choices (and you don't need to spend a ton)....and see what you think when you have them side by side. Since almost everything is returnable these days, you can't really make a bad choice and no matter what any of us tell you...you can't really know without trying it in your system and listening the way you listen!!