I currently use the web app and phone app from http://hn.premii.com/ I just installed HNBuddy, It's equally good. I'll use it for few days before I decide to switch.

What I will miss from Premii app if/when I switch.

By default, Loads article in Text(pocket/readibility) mode instead of actual web page. 90% of the links I click are articles (save for the Show HN )

Integration with pocket to save articles for offline reading.

Ability to choose Navigation position. I place it at the top so i don't see it when scrolling up and reading stuff down/below

Another feature that's missing on all the apps I tried, Ability to share(to pocket) without actually opening/loading the article. As an example, An article PaulG, I want to instantly share/save without actually loading it in the app.