I bought this dryer during a Folica sale after reading some board reviews of it (in particular by MiaMoore), and I love it! I think the ion generator really calms down the frizz and poofiness of my wavy hair. It's much smoother & shinier than usual.
The dryers I've used in the past include the T3 (have only borrowed not owned), Babyliss (owned), and SuperSolano (owned). They were all incredibly 'meh' in comparison to the Sedu Revolution.
The only downside is that it doesn't dry any faster than with any of my old dryers, but it also doesn't dry any slower. It might speed up if I use the hotter setting, but I'd rather not because I don't want to totally fry my hair.
I really like the compact style of the dryer too. It's pretty much perfect!