Way too early to call, we're eight episodes in. Comparing only to the first eight of the others, it probably would vie for first place against TOS. But as best series overall, no. Probably already better than VOY or ENT ever were, but that's a pretty low bar and there's better further down the road in TOS, TNG and DS9. Discovery needs to hit some ten-score episodes to compete in the overall stakes. I'm confident, it's had a great start, and at current quality level I'll carry on watching and enjoying. I'm now waiting for a Duet, or a Best of Both Worlds to know it's a contender for the big leagues