I don't think you can go wrong with the EDGE. I had one. and sold it, and have regreted it since. Great caliber, easy to load for, and was accurate .
I think it is an easy way to start shooting 300gr SMK. Get a set of dies from Shawn, a Wyatt magbox so you can go with a coal of 3.80, and slap a 28-30" barrel on it, and have fun. That said, I think the Lapua is a great round also. Another option that I have not seen mentioned is a new caliber the military is testing, with great success, and that is the 338 Norma. The cartridge was designed by Jimmy Sloan, and is set up to shoot the 300gr SMK with the BT at the shoulder/ neck junction with the COAL of 3.60. The case is 2.50 long.Ballistically identical to the 338 Lapua, 300gr SMK @ 2800fps, but in a 26" barrel, and with a COAL of 3.60, it fits in a standard magbox. It can be built on a standard Remington action , .700 bolt. Same base diameter as the 338 Lapua, dies are availible from Forrester, and Redding. PT& G has the reamers.