We used Adventure Alternatives for our climb 3 weeks ago, and I would highly highly recommend them. They are a UK based company but have local offices and staff in the countries they operate. I chose them because having met the founder - Gavin - I was 'very' impressed with both his experience in mountaineering and his values in running his company and specifically the fact they also have a charity arm called Moving Mountains which funds local projects in the areas they operate. We are based in London and Gavin came to do a presentation for our potential climbers - it was extremely informative and useful.
Working with Gavin is Chris, who not only accompanied us on our climb but also was very patient in answering all our queries prior to the climb. Chris also has a very interesting adventurous background and he was a great support for our team of 10 (including kids). He really looked after us and addressed all concerns that we had. Our main guide was Romli, who really supported us in summiting.
Overall it was an awesome experience and we are all glad that we did it - it will be a summer holiday that we will never forget!!More