I bought some new trainers on the day Saucony launched Progrid so was entered into a competition - and I won! I've now got 2 pairs of Saucony Trigon 4 Guides. I kind of wish I'd asked for an offroad shoe as the prize now, but nevermind.
I was thinking of leaving the extra pair in their box until I wear out the other pair (should last about a year). Would it be a better idea to wear them both alternating each run though? I only run 2 or 3 days a week by the way.