Honestly I would not invest in learning any software that is essentially abandonware, even if this is a Presonus forum, I can't do it in good conscience.
Dorico keeps hammering out great updates at record pace from what I hear, although I do not use notation software anymore for the writing or recording process, it's useless when you get good enough MIDI template.
So long as you keep everything ON THE BEAT/bar in MIDI, it will translate flawlessly to a transcriber/engraver regardless of which DAW you use.
This is how most pro composers work btw. James Newton Howard and Alan Silvestri can't be arsed to make Sibelius/Dorico files for their Cubase mockups.
Work how you want of course, I'm just saying depending on your goals, if it's to create realistic orchestra mockups, don't put too much pressure on yourself to output work in full score, working with MIDI is 1,000x better for all sorts of reasons.
If I did have to use a notation program I would use Dorico.
If you just need to render some quick sheet music Musescore is honestly totally serviceable as well in most cases though and it's free.
Even has VST support now!