Thankfully I did not play Solasta in EA.
I had fun from the start, but the Boss fight with Aksha was the point I was hooked into the story.
That was an epic D&D Boss fight! The combat stays challenging with even better Boss fights, and its true to 5e.
I also found the "companions" refreshing...far better manners...no shouting...no yelling (that I can recall)....very medieval overall.
BG3 has come along way. It is definitely improved greatly from some small adjustments. I am looking forward to full release.
Solasta is a theme Park ride, and BG3 is open world. BG3 has cinematics and is overall more with the times and offers the frills that go along with big budget.
I would recommend both games, and I am sure Solasta has effected BG3's development, which says a lot.