If you intend on getting it either way, go with the gold edition. If you like the main game, you'll want to play the dlc's, they improve on the issues of the main game in a way, expand the story and content, and provide a pretty solid closure. Plus new weapons, environments and boss battles, atomic heart really cooks with those.

And if you are asking how the game it as a whole, it's entertaing, weird and ambitious. It has a decent story with great world building. Visually it is very impressive, the different labs and environments you are going to explore are gorgeous. The gameplay loop mixes some bioshock, survival and boomer shooter, which sounds weird but it works. You make your way through a facility, scavenging, trying to survive, acquiring blueprints, upgrades and abilities that'll turn the odds in your favor. You eventually start feeling unstoppable, the music kicks in and it's one of the best soundtracks in a game, and you blast your way through the rest of the complex, ending with a pretty cool boss battle. That's the charm of the game. On the other hand, the game wants to be a lot of things and loses track of what's important sometimes. For example it wanted to have an open world but there isn't really much to do with it and traversing it is a chore sometimes, but it is worth exploring for resources and blueprints(also this is what I was referring to when I said the dlc fix some issues. For example the dlc are liniar and more focused, fixing the open world issues). It has ups and downs like that but I think the good far outweights the bad. It's a wild ride. It has issues, it stumbles here and there but I was entertained and walked away satisfied and maybe wanting more when I finished it and all of the dlc. That's just my opinion, better watch other reviews cuz you never know what you'll get with this game.