If steel is your thing than stick with it but I wouldn’t completely rule out aluminium. If you don’t mind looking for a second hand one I’d consider a Cannondale Caad 9. Although aluminium, they are widely renowned for their comfort, some say that they are as comfy as quality carbon and obviously don’t carry the weight penalty of steel. Cannondale even make a Caad 10 (the CAAD 9s replacement), with Dura Ace components for those who consider the frame to be of equal quality to a carbon one.
Personally I like carbon for a road bike but I’ll throw my two cents in here and say it’s not worth buying cheap carbon at all, don’t be tempted by a full build carbon bike for a grand, you need to spend at least £1500 for a carbon bike with tiagra components to be getting a decent frame.