I just got AFV's Sd.Kfz.251/1 Ausf. D yesterday, along with AFV's Sd.Kfz.11/4
and AFV's Pak 41/43? (8.8cm Anti Tank Gun) by asking a modeler friend to buy from Malaysia (there's no importer of AFV in Thailand).
My Dragon's Sd.Kfz.251/1 C has been built and shown in MM Page 21C several months ago. It's hard to tell which company builds better 251/1. But Dragon provides a free figure set with its 251/1 C, so it may be a better choice.