Just got back from Pulau Kapas last weekend.

Very very nice place to relax and kick off some stress.
Quiet and tranquil place.
You can even go there for an easy day trip since it is only a 10-15 minutes boat ride from the mainland.

Some pictures I took:















For better scuba/snorkeling/comfort, you are better off going to Redang since they are more commercialized, but also much more expensive.
Also, the water is clearer in Redang as Redang is much further away from the mainland than P. Kapas.