I just finished reading Doctor Strange: The Oath, by Brian K. Vaughn and Marcos Martin. I stopped buying comics about a year ago, but I still have a big pile of unread books. This mini-series was published back in 2006, so that’s how far behind I am. This is a good standalone story. It’s respectful to the characters involved, which I appreciate. The art is quite good too — a little reminiscent of Ditko, and maybe even a bit of Kirby in places. Nice and clean, and not flashy, except when it needs to be.
There’s an article on CBR where Vaughn discusses his approach to Strange and his goals for the series. If you think you might be interested in picking this up as a trade, go read it. It’ll give you a good idea of whether or not this series would be your cup of tea.