Adox CMS 20, available in 120 format as well, with adotech developer. Nothing has higher resolution.

I have tested Technical pan in technidol with CMS in adotech in small format: I like results from TP more (don't know why, just more pleasing final result), but adox CMS 20 has smaller grain. Making print 30x40cm and using grain focuser - you can't see the grain! It is ridiculous how high resolution and small grain it has. And this is for 35mm, you can imagine how it is for 120 format.