I went with Ecuador Eco Adventure on a 2 day horse trek around Chimborazo. I had an absolute blast. The horse riding was amazing. The highlands were beautiful. Ecuador Eco Adventure had everything ready for us, for less than half the price of other tours. We had meals, transportation, lodging, and great guides. We visited Salinas and thermal hot springs. It was an all around great adventure.
Not to mention the night before both trips, our guide stayed up until after 2 AM to get me from the bus station without complaint.