Default Best app for ROM theming ?

I've used MIUI and Avatar for our Phone and just love the ability to theme my phone. I tend to get bored unrealistically easy so i need this ability. I barely keep a phone more than a year, keep a ROM more than a month , and a wallpaper, keyboard,status bar, launcher, dialer, etc.... more than a day. So while i dig the themer-beta app, it's too restrictive. I make my own zooper images along with tasker and trigger functions, but they take too long.

So my preference is something like the MIUI themer which easily allows me to change the dailer, or the status bar, or the notification pulldown, or ANYTHING. So finally, my question.... What is the best themer application or themer launcher, or theme ROM?