I know paying sucks...
I bought Resco's and because of the FX function
(it allows you to save 11 texts you use frequently)
I cant live without it. The skins are not bad and easy to make.
Plenty exist already over at the Lakeridge forums.
P.S.
BuzzDev.net has some WM5 skins (nice too)
but I dont know if they will work.