So most resources is the criteria? I guess all have the same amount of resources. RMXP v1.02a (the one you said 'normal', the legal one released by Enterbrain) is the latest one. Then there's a v1.03 RTP (not RMXP itself, just the RTP). I've downloaded it, and I didn't find much difference. It had same amount of resources. You might want to check it out yourself. Just google it.