Tim Horton's offers a great breakfast sandwich. What sets them apart from the rest of the competition is their use of the homestyle biscuit as their bread choice. It's slightly crispy and goes really well with the rest of the ingredients. It's often argued as to what is the single thing that makes or breaks a sandwich...I've heard that it's the bread. I'll have to agree on this.
If you're not in the mood for sausage, bacon is also available.
Recommended if you've never tried it yet.