I did day tours in Iceland. This is the way I normally like to visit places so I can eat where I want to eat and have more flexibility. There seem to be 3 tour companies in Iceland all offering pretty much the same tours.

Iceland Excursions and Reykjavik excursions are the two biggest. (Reykjavik Excursions run the Flybus which is a great way to get from the airport to town and return.)

But my recommendation would be Gateway to Iceland (GTI). They were consistently cheaper, but more imprtantly their tour sizes were smaller. Often we would be in a mini coach while the other tours would turn up at the same place in a full size coach. I found their service and their personal approach to be excellent.

One comment about Reykjavic Excursions : on the last day they forgot to pick me up from my hotel for my return to the airport. When my hotel rang to check, to RE's credit they sent a bus around just for me. They held the main bus for me and I made it with less than a minute to spare.

The city tours are just ok, Golden Circle is great and I wouldn't worry too much about South Coast unless you have a fair bit of time. I missed out on Blue Lagoon because of the time and I feel I should have missed the South Coast and gone to Blue lagoon instead.

As for China:

I went with Wendy Wu for about 10 days and visted Shanghai, Xi'An (Terracota Warriors) and Beijing. Depending on your interests I think this provides a good oversight of China. It's a pretty busy tour, but I still found time to go out and visit bars by night.

I would like to have seen the three gourges and next time I will go out west to see the pandas.

I thought the tour was well run and given the complexities of travel in China I would do a tour again there (whereas everywhere else in the world I'm an independent traveller).

My only complaint was the food. There was plenty of it (3 cooked meals a day) but it was bland. I understand they needed to find places that would cater for tour size groups, be reliable, be safe, be acceptable to people with a broad range of tastes and at all these things they did a greta job. But it was boring. My best meal by far is when I escaped from the tour during a shopping trip and the tour guide pointed me towards a muslim restaurant. The lamb stew on flat bread with some lamb skewers was delicious and one of hte highlights of the trip for me.

But overall I would recommend Wendy Wu.