Its all personal taste. I liked 10 and I didnt like 3. 3 was pretty shady, but it was the only one available the day we were there, it was during the HRH 1st birthday bash. We were there in January last year when we had 10 and we were able to "catch some rays" in the afternoon. There is a hot tub behind 10 and it is in the sandy area. I like 7 - 10, they are in the sandy area.
The person at the fitness club said #1 & #2 were best for tanning. I reserved #1 for a couple of days of my stay in early April. Reserve early to get your choice.