Vittoria Rubino Pro 3 Tire - Clincher
Awesome training tire that will last ages, and very good puncture resistance. They are not as fast for racing (best to go with the Vittoria Open Corsa range there), but as good tire as you can get for training. They would get 5 stars if they were a bit faster and grippier, but for a training tire, they're perfect.
Fantastic range of colour options too.