It might always end up being a more expensive but... I think the best way is to build a kit yourself, even if it means to salvage items from other kits or buying stuff in bulk.
However, for people that are not on this forum, I would say that the best thing to do is 1) learn basic first aid and 2) purchase the AMK Ultralight .9
My two cents
While I certainly agree with you, I fear most people simply don't have the patience or passion to put together a decent kit on their own.
A Ritter PSP makes a GREAT gift to encourage freinds/relatives to get "equipped". If you really care for them you could get them a PLB too :-)
For those folks, being able to start with Doug's PSP is a real advanatage and makes it much more likely to happen. Just add critical items such as a locking knife, mini Bic lighter, a few 55 gallon garbage bags, LED light, FAK, Micropur tablets, and some kind of folding 1L water container (even 1 qt Ziploc bags) and they're set to go.
Like you say, those "in the know" tend to have their favorite types/brands of kit items, but the stuff in Doug's PSP is first rate gear at a decent price.