Todo is great. Maybe because I've gotten used to it, but I still prefer ToDo over Toodledo's own application. And I'm using Toodledo's service.
Evernote is pretty cool and I like it, but I just don't use it enough. I know I should depend on it more, but I haven't yet.
I'd also like to add eWallet. For me that is indispensable. I use it at least every other day...to find some website password, router ip address, bank account number, travel miles card number or something. eWallet is the BEST wallet personal data manager ever.