So I ordered both sizes. Perhaps against intuition, the BZ100 are the larger size. I haven't got my Astrotec AX-35 yet and I didn't heat or shape the molds but I tried snapping in the IEMs I do have handy:
HiSound Audio WooDuo 2: Loose fit inside the BZ200
Nuforce NE-600X: Tight fit inside the BZ100
Monoprice 8320: No fit inside either
Looks like I'll have use for both sizes after all, assuming the molding process goes well and I like the result, that is. From pictures I'd also guess that the Astrotec will fit one of them, most likely the BZ100 better than the BZ200 but I can't tell for sure before I have them.
HiSound Audio WooDuo 2: Loose fit inside the BZ200
Nuforce NE-600X: Tight fit inside the BZ100
Monoprice 8320: No fit inside either
Looks like I'll have use for both sizes after all, assuming the molding process goes well and I like the result, that is. From pictures I'd also guess that the Astrotec will fit one of them, most likely the BZ100 better than the BZ200 but I can't tell for sure before I have them.