A friend recommended GTALawn as they'd laid her turf, so I also got a quote from them. My lawn although smaller than my friends, cost exactly the same as hers, which was the first warning sign.
The guys came to lay the sod, but didn't bother to level the soil first. They also gave sod-all help or advice on what to do about raccoons peeling back the turf rolls.
The grass itself is of reasonable quality, but after 1 winter it's now as uneven as Rob Ford's track record in office; with more holes than a Swiss cheese. I really can't recommend this crew.