It takes a big time investment to come into this hobby (or lifestyle, as I call it) and figure out what you are looking for. The journey is part of the fun though, and I think that part of the problem is that when somebody has maybe one or two hundred bucks to spend it becomes a tough choice on what to get as the best 'bang for the buck' upgrade. The newbies want a quick answer vs. doing the hours of research. I for one enjoy the hours of research.
For any Grado owner that choice should have gotten much easier now. Get the Magnums first. Right now I'd even recommend investing in them before any source gear or other upgrades if the budget is tight. That stuff isn't going anywhere but who knows how long Rhydon will have these available for sale. Hopefully for a good long while, but you never know.
I just built a real full headphone with them and I'm really impressed. I know this sounds criminal, but I had pigtail wires soldered onto the drivers so that I could test different cups with them... So I was moving these wonderful drivers in and out of cups and just twisting short copper leads to 'hook them up' so I wouldn't have to resolder them going from cup to cup. They have been installed into a permanent home now (I think), and suddenly instead of working I'm back to listening to Gary Moore tear it up. These are really great, I had high expectations after reading this thread and I'm happy to say they were met.