FWIW my core rule book has stood up to a lot of use over a few years without breaking down at all (I may have broken down a couple of times trying to trace how some rule or other actually worked, but that is a different issue). Anyway, I'm pretty sure that I saw somewhere that the new printing is using a new printing house, so old experiences, good and bad, won't apply.
As for eratta, I think there was a printing with a previous wave included, but I'm not 100% on that. Even if this is the second update, they've basically fixed the burnt out headlight on a car with mis-matched tires, no wind-shield wipers, and a lot of slack in the steering system. Yes, the fix will help, but it will still be 'interesting' to drive this thing. That said, when you get used to it, it mostly handles pretty well and is a lot of fun.
In short, I'd say go for one of the new printings. The book is actually not bad to read, it is more that extracting the rules-as-intended from all of those words can be challenging at times. If you are liking the game, reading the book should be enjoyable for the most part.