Mike, order the info packet from Alpenglow...
...using the link Trevor provided and look at the illumination patterns, lumens provided, etc. This provides a good orientation for you as you shop for lights.Alpenglow lights may not be suitable for you as they are relatively expensive and make more sense when one uses the lighting frequently, long term, and requires long-term reliability. I can tell you that thru-out the Caribbean, along the East Coast and - somewhat surprising to me - even here in the UK, owners of serious cruising boats instantly recognize our Alpenglow lights (usually because they have some, as well) and view them as the Gold Standard when all factors are considered (heat build-up, amp draw, bulb longevity, strength and 'feel' of the light produced, reliability, etc.). I can say from personal experience that Bob (Alpenglow's owner, way out there in Montana somewhere...) provides customer support beyond almost any other vendor with whom I've dealt. But...again, they may not be the optimum choice for particular needs.Jack