I live in the gulf and I enjoy traveling and seeing new places interacting with the people and learning more about the various cultures. What I liked about Oman was the sites the cleanliness and how courteous and friendly Omanis are. They are humble and very generous they know how to treat a tourist and they know their country well you can feel how proud they are of their heritage their Sultan and of being Omani. I can honestly say so far from all the Gulf people I met they are the friendliest.
So if you want to do lots of sightseeing and going about Muscat is the place; you can find taxi drivers that will give you day tours all you need to do is negotiate the price.
Salala on the other hand is a very relaxing place, a little sightseeing Hotels usually have shuttle buss that will take you to the souq, from there you can take a taxi and go around the city always negotiate the price. The best part of Salala at least for me was the nice beaches lots of palm, coconut, mango and banana trees there was so much green around, but I was told that I was there to early, I should have visited Oman end of July, August etc. when the weather is more mild and there is even more green around. I guess next time I’ll plan better.
In September I’m planning another trip and I’ll let you know how it went as well