The staff at Socialtours are exceptionally knowledgable and professional.  They exceeded every expectation from my initial corespondance with the company all the way through my trek.  Rather than attempt to "sell" a pre-packaged tour they tailored one to my particular interests and capabilities.  The guides and porters they employ are top notch.  Moreover, they were able to solve any problems I encountered with a level of service that is difficult to find at most trekking agencies.  This, along with their dedication to the preservation of Nepal's environmental and cultural beauty should make them the first choice for any prospective traveler.