I went through a similar process. I ended up getting a Pixel 5, they are still being sold new-in-box on Amazon. I really liked the size and weight of the 4a but wanted something that had 5G support. The 5 is actually smaller and lighter than both the 4a 5G and 5a 5G. Very thankful to the folks who run gsmarena.com, it's extremely helpful for this sort of thing.