I have Smartnote free edition too, and have tinkered around with that a little too and actually prefer it over Note TakerHD for PDF annotation. However, I decided what the heck, I'd heard that Goodreader was decent, so I downloaded that today and like it better than both. In all fairness, I only just started to do annotations, so I can't make the most sweepingly comprehensive assessments yet, but that's what a forum is for-inclusive of sharing the learning experience too, eh? I like that Smartnote has the highlighter pen at the bottom of the screen a simple visible icon away. Put that in Goodreader, and I'd be really happy. But Goodreader is a PDF reader app first, not a note taking app, so I get the point as to why you need to first touch the screen to make the menu appear. And I like how it displays the pages and the smooth page turning better, so it ends up winning overall, and even being new at it, I can see it won't take long to get used to bringing the menu up, etc. I also perused Noterize on the App Store and thought about that too, but wasn't going to buy both. At this point, I will stick with Goodreader for my annotating. It seems to be a darn good PDF reader anyway, so I definitely am appreciating that.