I've treked in Nepal twice with Himal, Simbir and thier team and can say they are the most respected and reliable guides you will find. No matter where we go, everyone knows Himal and Simbir, with all the guest hotels and food stops really looking after our group. They are so experienced other guides often join on at times knowing Himal and Simbir will provide the group with a friendly, fun yet safe experience.
Both Himal and Simbir have stayed in touch with me over the years and I consider them friends more that guides. I really look forward to my next trek with them.