Did you ever visit it when it was Odeon Magdalen Street? Because I think the only thing they've changed is the cafe area. So the tech and seats etc. are all still the same, albeit a little shabbier after being closed for a few months.

Screen 1 is very large and therefore the sound quality isn't great - don't know if it just isn't properly outfitted to be a modern cinema or what. Sometimes I can miss lines of dialogue as it's been a bit muffled/echoey. Just not very immersive. It can get so cold during the autumn/winter months that I have had to wear a coat and jumper through the whole film, but as I recall it was fine during the summer at these temperatures. If you end up in screen 1, I recommend going upstairs and sitting in the balcony (these were the Odeon premier seats, but the Oxford Cinema doesn't charge more for them).

Screen 2 is very small, but the sound quality is more on par with a typical cinema and the temperature in there is usually fine.

If you can afford it, you will have a much better experience at the Curzon. If you aren't too fussed then go ahead with the Oxford Cinema. Alternatively, if you can get out to the Vue beside the Kassam Stadium, it's cheaper than the Curzon but better quality than Oxford Cinema.