Dennis and his crew did our basement underpinning in late 2014, and they were very professional throughout the entire process, from quote to completion.
Dennis himself explained the whole process very thoroughly before we signed the contract. His crew was always prompt, hardworking, and friendly, and left the job site neat at the end of every day. They even decorated it - at Christmas, Dennis pointed out that the orange safety fence didn't look very festive, so he asked if he could put some lights on it for us! Such a thoughtful touch.
Dennis adapted to small changes we requested during the process without changing the quoted price (drain here instead of there sort of things), and did everything he could to be detail-oriented and conscientous about planning ahead for the final finished basement. He was happy to answer any questions we had, and was even happy to explain details to my dad over the phone.
When the job was completed, Dennis was prompt to clean up his equipment and left everything neat and ready for the next stage. He even came back several weeks later when we discovered a small spot where the concrete had been messed up while it was drying - he returned and re-filled the dint that had been left by a sagging hose (again, no extra charge).
Our neighbours in the other half of our semi-detached are planning to underpin their basement soon too, and we are definitely recommending Strong Basements to them. I guess that's a pretty confident recommendation, then!
(PS - They like homemade muffins and caramel corn. Never hurts to keep your contractors happy!)