We used a Jeep from Overland Vehicle for our trip to Kathmandu and Pokhara. They offered a reasonable rate for our trip. The vehicle was in good condition, and our Chauffer was very friendly and go over and above to assist us. He actually helped us to bargain in shops in Nepalese. Sometimes felt driving to be bit reckless, but later on realized that its the way of Nepal Driving of everyone :)
Ram the Managing Director if freindly and was very prompt in his communication. He made an extra effort to come and personally meet us to ensure everything is ok with us. Moreover he called the chauffer time to time to get an update of our travel.
With our experience I Highly recommend Overland travels to anyone.