I've had a few No. 1's. My first, and which I'll forever regret selling was marked "7mm Remington Express" now known as 280 Remington. It shot wonderfully. Presently I have one in 300 H&H which does the same (esp. with 200 gr. Barnes TTSX), and a full stock in 257 Roberts which is challenging me.
Most people don't know they've been discontinued, so now is the time to find them used for ~$700. Guaranteed they'll be bringing more in a year.