"Prime is alone, the three or you can take him!"
(or can they?)
Pax Cybertron - great site, well taken photos, great reviews of G1 and recent releases.
Robot Points - featuring Ras and his (very) rare toys and prototypes.
Transformers Seminarian - who works in a seminary, who writes about Transformers, and other stuff.
Optimal Omega's Transformers - passionate articles about his collecting journey and childhood toys.
A G1 Journey (aka Staying in the Box) - Matt's G1 journey, also extremely passionate and detailed articles with loads of high quality photos of G1 pieces.
"D-50 Motormaster was the hardest of all the original four Scramble City leaders for me to find. It didn't matter if I was looking for a loose one or a sealed one, launcher equipped Motormasters were tremendously scarce... On top of that, a sealed or boxed D-50 is even rarer, and I've talked to dealers at Botcon and other collectors who have stated that Menasor giftsets are more common than sealed/boxed D-50s. And that's saying a lot!"