I bought a pair of binoculars to replace my ancient and cheap Bushnells: They survived a hunting trip in the mountains, but I'm cautious for a multitude of reasons. The issue of porro prism vs. roof prism binoculars was obviously before me. I came across this simple article (for anyone wanting to sort out the differences)
https://www.americanhunter.org/articles/2012/10/19/are-roof-prism-binoculars-superior-to-porros/ and arrived at the obvious conclusion: Why do manufacturers not spend any amount of time wringing the most performance from the older porro prism design. It's claimed the roof prism is more compact, but while they are more slender, they are also longer... a point I found made redundant size and weight arguments leaving clarity/quality and cost at the fore front. I couldn't find a new porro prism made by reputable European or Japanese company so settled on a Leupold Yosemite... light, inexpensive, good glass, short(and chubby as opposed to thin and long). Fad avoidance is something I've done since my youth... not that roof prism binoculars are bad, but it seems fad has propelled them to the forefront and it's tragic the alternative has become so neglected: so it goes with new and "greater" cartridges.