Quite honestly, I am torn. The best jobs I had so far involved multiple interviews (Amazon with a total of 6 one hour interviews and my current employer with 7, the jury is still out on my current job one month in), the worst involved either one or two interviews or multiple, but very easy and yet unpleasant ones. Scripted questions suck, Amazon in my case was good, as there was only on scripted logical question and the rest was STAR-style leadership principles centered questions.

Multiple rounds give you more opportunities to ask questions to multiple people and get a better idea of the company. They can also be a pain in the ass.