Roswell area 52 tower is supremely well made - exudes quality.
I have only had it on the boat a short time, so can't vouch for how it lasts .. but it is so solidly built, impressive billet ally and first rate tig welding, with heavy anodized coating.
Just so damn expensive.
I really like the idea of getting the SkySki rack for the Tower :
http://www.skyski.com/node/93
but that is very expensive