Oxford locks have a really bad rep; made of cheese or something. Wouldn't touch one with a bargepole.
I don't use a reminder cable, because I use my disk lock on the rear wheel, and there are apparently no springy cables available which are long enough to reach the handlebar. Why do I put the lock on the back wheel? Ask yourself how easy it would be for two blokes to lift up the locked front of your bike by its handlebars, and wheel it into a van. Now picture the same scenario with the rear end of the bike locked - not impossible to lift but it's a whole different ballgame and a bit of a no-brainer to lock the back wheel as far as I'm concerned. Both wheels even better obviously.
A far better solution to the reminder problem (which believe me, would definitely be a problem for me!) is a tip I picked up I think on this forum but maybe another one: I keep a short length of rubber tubing pushed over the end of the disklock key, which I have to remove in order to close the lock. I then shove the tube over the blade of my bike's ignition key instead. Then when I come back to the bike later, it's impossible to insert the key into the ignition until I've taken the reverse steps to unlock the back wheel. Never failed me yet!