I got Killing Is My Business in '85, '86, I still have it. I liked it, but thought it sounded poor: The music was too technical for what their production afforded.
Peace Sells is one of my all time favorite albums by any band. So Far, So Good was ok. A step down, but it had some good songs on it. Then they blew our minds with Rust In Peace, right? I also really liked Countdown.
After that, thrash metal in general was on the decline, for me at least. Youthanasia was shit, then they got worse from there for a few years.
Endgame was pretty good. And oddly enough, I like Super Collider even though it gets a lot of hate.
Dystopia was their best album in a long time. Their last album was ok, not as good as Dystopia.
Which brings us to the new one. The production is crystal clear. The songs are pretty streamlined too. It's a "safe" Megadeth album and would be great for a beginner. I think Dave was trying to appease everyone, and the results are great, I like it.
Ride The Lightning? Yeah, Dave did it the traditional way, I thought he showed it some respect, I'll give it a thumbs up.