I use an LPL 6700 the baby brother of the LPL7700. Both are still available new but I don't know about prices where you are but used darkroom equipment has dropped through the floor price wise. You should be able to get a LPL6700 for around £100 or whatever the equivalent is where you are. They will enlarge a print to 12x16 with no problem and are VERY well made with replacement bulbs being available almost anywhere. The focussing knob is easier to manage on the 6700 although an adapter was available for the 7700. Spares are no problem
I have wall mounted mine so in fact I can enlarge up to 20x16 if I wanted to. I don't, but it gives me that extra bit of flexibility and on the wall it is completely stable.