I happen to like the 7mm's. But I also think that the 7mm magnums are the most overrated cartridges around, and I liked my 7mm Rem. here's the problem with the 7mm magnums. When you get above 160gr bullets, the 30 cal's shoot them faster. The 300 RUM w/180gr bullet will out run the 7mm STW with 175gr bullet by about 300 fps. Readily available for the 7mm mags is 175gr tops! For the 300 RUM 220gr and it gets about 3000 fps.
Where the 7mm really shine is in the 280 Rem and smaller. They handle 160gr bullets very well at a lot less recoil than either the 7mm mags or the 300 mags. The 140 to 160gr 7mm bullets are fine hunting bullets and the velocity of the standard cartridges is far less likely to tear up the bullets which means inexpensive cup and core bullets work well. Furthermore, anything the 7mm mag will do at 400yds, the 280 and the 7mm-08/7x57 will do at 300 yds. Average shots at big game are far less than that.
I don't think that cartridges such as the 35 Whelen are necessary for anything in North America. But madden made it clear in his first post that he preferred larger cartridges, he has not wavered much. If the truth was known, I wouldn't want to be in front of any of the loads we've discussed in this discussion. If I were, I'm not sure I could tell the difference of one round over the other.