yeah like you said you are overthinking this....we appreciate your concern about getting the best for you son, an admirable thing to do, and you are justifiably weighing such factors as cost, quality, sound etc....
the mapex kit looks nice, probably is, i own a mapex snare and love it, but every year, every manufacturer wil come out with something "new" and " improved" this is called MARKETING....is striped toothpaste really better than plain white toothpaste....is your "new" laundry detergent really "new and improved" buy something you have played and liked rather than something you have never seen in real life and have not heard....
like genisis sang in a track of Lamb Lies Down on Broadway.
"The grand parade of lifeless packaging....
everyones a sales representative
wearing slogans in their shrine,
dishing out fail-safe superlatives...."
but like you said you are overthinking this.
like others have said, get him a quality entry / inter kit, plenty to pick from, and many have offered their takes on the different brands....MR. A has the right idea with his motto about kit, cymbals and heads. follow that advice. size the drums for his physical stature, no need for the huge Bonham 24 x 22 BD here : )
if i were in your shoes....check
www.interstatemusic.om phone 1 800 462 2263 last time i checked.
Gretsch Catalina Birch -
16x20 BD $ 165
14x14 FT $ 149
10x8 tom $ 99
8x7 tom $ 88
pick a nice wood snare, get some hardware, some new heads, some sticks, let the boy play.
you will have extra money for lessons [ IMPORTANT ] cds to listen and play to, some cymbals and cases
by a small recorder so he can record his playing and learn from a different perspective
can get similar deals at similar prices for Sonor Force 3003, 2003 and
Premier Cabria Series, in fact from interstate you can get complete kit [ drums, snare, hardware ] in wrapped finish for $ 600, and in nice Lacquer for $ 780. fits mr A's advice.
get something and let him become a better drummer....but please make a decision.
"is that your final answer ? [ man, i just don't know.....]
good luck and jah bless