well, i really like my 28 nosler over my brother's 7mm STW. It just seems more consistent.
I also like the 7x57 more than the 7mm-08's i have had.
I like the 6.5 creedmoor over the .260.

I think it is popular to be a contrarian. I generally pick a cartridge based on it's merits. I gravitate towards short action rifles, because my 3 300 WSM's, 6.5 PRC, 3 6.5 creemoors, have all been more accurate than any of the four 7mm Rem Mags, the one .270, 280ai, or three 300 Win Mags i have had. The 28 nosler and 7x57 are the two long actions that i have owned that are significantly better than MOA shooters. I like to have newer cartridges, but i also have a modern 7x57 and a modern 8x57. I don't get too caught up in bashing cartridges. I also have 300 7mm WSM brass, and have not built a gun to match yet. I will probably go that route before i go with a 7mm prc... but i still like to look.