E-chors and similar sites

[sublro]

Wondering if anyone's had experience good or bad with e-chords or similar sites. I'm looking for the best ipad friendly sites for finding , grouping (as in personal songbooks) songs WITH CHORDS NOT TAB. Willing to pay for the best solutions. To me, that means big selection and easy search and songbooking and display functions. Also means that importing my own files is not the focus, only a nice-to-have extra. Suggestions? Experiences?

PS - Also, i know about chordie, and its ok but not good enough and not getting better, probably because theres no developer hoping to make money on it.