Rent is just one part of the equation - maybe it would be better to include bills and food aswell?
Including food, bills and rent our monthly outoings are around £2200, 50% of our joint take home. We also try and save about 900 a month, but usually whenever we get a decentish amount in the pot we splash it going on holiday
Next year my pay is going up but I have a funny feeling there will be a wedding to start saving for :O