The best lights by far are Dry Launch lights by Sierra;
http://www.drylaunch.com/ I have 701's and the more modern/square ones are the 702's. The 203's are my clearance lights. Have not had a single problem with these and I have used every light out there and they all blow, some faster than others. The only saving grace with West Marine brand is you can take them back and they will give you new ones no questions asked but who wants to go through that all the time?