I'm sorry to hear that MoM minis are frustrating you! For what it is worth, the wings on the Star Spawn are annoying to paint and impossible to keep straightened (I know I certainly tried)! It ended up taking me about two weeks to paint my Star Spawn as well as I could and while it was a bit frustrating, I found it worth it because they are the most impressive and worst enemies in the game to face.
If you're looking for the best/easiest minis to paint, I would recommend trying to paint some investigators first. Unless you rebase them, they're already attached to a base and seem to have less mold lines compared to other minis. The plastic is still soft and you may need to heat up small pieces to get them straight but once you do, you're good to go.
Also, if you haven't played the game yet, instead of painting it all first, I'd recommend giving the game a shot and seeing how much you like it. If you love it like I do, you'll find the motivation to paint these minis despite all the frustration they can cause. I know as I've found higher quality minis, I've found it is best to do a couple MoM minis and take a break and do something else so I don't get too frustrated or lose motivation. If you need any more advice or run into any more trouble, let me know and I'm happy to help
I hope that you enjoy the game even if you decide not to paint the minis or to do so as quickly as possible. Having the most fun possible is what it is all about!
