In which I let loose my inner curmudgeon
On the budget - the original is claimed at $10M , which was outrageous at the time. It was trimmed to about half that. It was a *high* budget picture for the late 1960s. That was the existential crisis of it.
Contrast it with a roughly concurrent offering, "A Clockwork Orange" which was made for $2.2M. According to Scorcese's "Personal Journey", this period marked a real low point for the industry, until "Jaws" ... rebooted release strategies and budgets. Even then, Heaven's Gate in 1980 sunk $44m and returned $1.5 and took entire studios out.
The original was just about state of the art - especially the prosthetics - for the time. And I'm not kidding about seeing it at a drive-in. It's the right venue for that movie :)
Sci fi filmmaking didn't really hit its stride until 1979s "Alien". The new franchise is clearly visually superior to the original, and people with skills like like Andy Serkis possesses just didn't *exist* then because of no CGI. So on any measurable front, the reboot is *probably* superior.