I don't have an answer for you, just a thumbs up for ivona tts and Amy (UK) voice. Best tts I've heard yet. There is a US voice but she does not sound as sexy

. Currently free while in beta.
Btw, if you are into tts, you should check out moon reader, which gives you more tts control, pause / resume and jumping to next / prev sentence / page. You can also add a sort of translation table to correct some misreading, like
I.e. = I e not I dot e.
No. Followed by non numeric = no not number
w/ = with Not w slash
I don't know what it supports in term of remote control, though. It's on sale now for $2.50.