We did the 16 Day – EBC/Gorkyo Ri Trek and it was an amazing experience. Our guide, Suman, was knowledgeable, energetic and just a great guy to be around. We were a bit nervous about the altitude (since we never been anywhere close to 5600m before), but Suman checked on us frequently and advised us not to skip our acclimation day when we were feeling confident and wanted to include the Renjo-La Pass. Food/accommodation was also as great.
The organizer, Dipak, was very accommodating with our stay in Kathmandu and helped us with our travels to Pokhara, afterwards. He answered all our questions and also managed to get us the option of a flight or helicopter out of Kathmandu Airport, during a time when flights are rare due to construction.