According to my experience the best way to travel is by on your own. we can book vehicles then and there. The drivers will always take us for shopping because they get commission from every place.you will not feel free in your valuable holiday. This person will always try to take you to his places no freedom. 

I went to Sri Lanka with my friends this month (8th Oct -  20th Oct) and it was amazing. Ruchika (our driver and the guide) was the most nicest person we met in Sri Lanka. He knew every part of the country, every road, every place we asked him to take. He explained about culture, history and everything perfectly. Well experienced, careful driver and knowledgeable guide. Can highly recommend. Thank you Ruchika, you made our holiday wonderful. We wish you all the best!