Moved from Jerboa to Sync. The level of customisability, attention to detail, polish, and especially performance in Sync has not been matched by any of the other apps I've tried so far.
The three things that really bothered me about Jerboa is the intermittent crashing when viewing comment threads, the lag when scrolling through dense comment threads, and the mis-clicks where it seemingly forgets what part of the screen I'm tapping on, and it seems more bugs are introduced each update. It was a great starting point, not so sure I'm going to miss it though.
On a separate note, I'm hoping the Sync dev finds a way to allow non-Play Store users to buy the ad removal in future
I mean it's really just giving you a choice on how you want to support the dev. Either by having ads or paying for the application directly. If either of those are too much then head to another app. There are literally quite a few free apps available,which is fantastic, without ads. Free as in freedom to choose doesn't mean though you should be a mooch and just take and not contribute anything back to the community that you're a part of.