i did a little comparison between both of them a few pages back
https://www.head-fi.org/threads/goi...e-we-there-yet.861024/page-1225#post-15408072
for me, both the XM3 and BQC35 worth their price. i use the BQC35 for gym use, running, and motorcycle rides.. well, basically for more "beater ANC" uses, while the XM3 for travelling and mostly indoor listening. what we paid more on the XM3 are for better sound, ANC, and app support, but the BQC35 also edges out the XM3 for better fit.
so in short,
@jfvny the BQC35 for me personally worth their price indeed
@RobinFood unfortunately it doesn't have ambient mode, although because the passive noise blocking is not too good compared to the XM3 (I'd say it's on par to the Nillkin Go) so with ANC off it kinda do "semi ambient" mode.