I really like the quality of the LDH nets. I use one of the steelhead models: http://www.ldhnets.com/steelhead.htm
Very few people wish they had a smaller net when a large fish is on. Many have thought the other way around though.

I did just buy my two children two Frabrill (sp?) wood handled nets with catch and release netting. They were only $12.95 each. TU, encourages the use of a net to facilitate the proper catch and release techniques.

http://www.wisconsintu.org/cpr.htm