The one with the scarf would be the Fourth Doctor, played by Tom Baker.
The newest iteration of Doctor Who started in 2005 after being off the air for many years; the production values are much higher. They started with the Ninth Doctor; they’re now on the Eleventh, and will be moving on to the Twelfth after this year.
I never could get into the old Dr. Who when I was a kid... I watched episodes now and again, I just couldn’t get past the cardboard sets. I still have fond memories of Tom Baker, but it’s more a nostalgic thing than being a “fan” of the old shows.
3 of my 4 teenage daughters started watching with the 10th Doctor, and now it’s a “must see” show in our home. I’m really glad they brought it back and actually produced it the way it deserves to be crafted.
I don’t know where I would’ve stood in this nerd war though... I’m a Rebel Scum Trekkie Whovian! ;)