I can't decide between Vietnam Highlights, Beyond the HCM Trail and Explorer. Highlights seems like a slower - nicer pace with a trip to the beach, but skips Sapa which I've hear is not to be missed. Beyond the HCM has Sapa, but skips the beach - and what is a trip without a visit to the beach. Explorer also skips Sapa, and just might be too long (not sure I can go for 3 weeks) and a little too ambitious (a 7 hour hike). Lastly, since I am going on my own I am hoping to find a tour with other like travellers about 30 yrs. old. Which one is is right?