I agree that it is a good deal. I fly Premium Economy to Europe and Economy Plus domestically. I've flown domestic first class once from my small regional airport, through Atlanta, to NYC. My fare class for that trip did not get me access to Delta's lounge in La Guardia
I have never flown better than PE to Europe and I won't go to Asia until after I retire when I can stay on that side of the world for longer than a week.
I use Google Flights to search for the best deals, but set some limits around total travel time and layovers. Since I'm still working, my travel dates are not very flexible, but I generally look for a PE fair that is roughly twice the price of cattle country. We stay in Airbnbs so I can afford to splurge a bit on airfare and I'm 6'2", so I find economy to be intolerable for more than a connection flight. I've looked at some exit/bulkhead rows in economy and I think I could sit there too, but I enjoy the other perks of PE. My most recent trip was with Air Canada and I enjoyed zone 1 boarding and priority baggage handling. It's the little extras that I'm currently working for