Quake 1 never had a "standard" resolution.Also there are Quake 2 ports too. KMQuake2 is a nice port that adds a few extra visual effects without ruining the game's look.
QRack makes Quake all flashy removing the mood of Quake. For a nice-looking engine, i prefer DarkPlaces with Rygel's texture pack, highres models and the new .rtlights file. With a beefy PC you can get something like this.
@Hugo:Your memory is somehow messed up. Doom never had any other mode than 320x200 whereas Quake 1 had a bunch of modes from day 0. Most people i know ran in something like 512x384, although that was in ~1998 when faster computers were available.
Doom95 was released after Quake.As for 320x200, i'm sure there were people using it since i remember the review of a local magazine actually recommending people to upgrade because the graphics were improved a lot in higher resolutions.