I moved from a different “simple” notation software (Capella, pricier than Dorico Elements, cheaper than Pro) to Dorico, and I have never looked back. Yes, initially, inputting notes appeared a little more involved than simply placing notes, but as soon as I saw that Dorico thinks musically and wants you to input your music and leave the notation to Dorico, I was convinced that this is the way to go. Now, with MIDI input, I’m faster than ever and my scores look nicer than ever without (and this is crucial) my having to tweak the score for hours. It just looks beautiful. The development team really “gets it”. In fact, I have found several engraving errors in published music that Dorico got right automatically when I entered the notes.
Also, the user interface is well structured and (once you get the philosophy behind it) very intuitive. I hardly ever need to consult the manual. Compare that to other programs (check out Tantacrul’s YouTube channel https://www.youtube.com/user/martinthekearykid). Yes, a few things are difficult to do, but they are so worth the time learning.
That said, I personally would not like to restrict myself to Elements for some projects, because Engrave mode can be very helpful in some situations. But unless you buy Dorico with an education licence, there is an upgrade path to Pro which is even cheaper than buying Pro directly.
Waiting for Dorico 3? I wouldn’t want to. There are not many things you can’t do now, so unless you have some extremely extravagant scores to notate, you probably can do them in Dorico (at least in Pro where you can “abuse” some formatting tools).