Which modem firmware for Samsung Galaxy S (GT-I9000) works best with the mobile networks in Russia?
(Initially, the device had XXJPK radio firmware, and it worked bad in Moscow (Megafon operator). Another device had SPJG2 radio firmware, and it worked a bit better here.)

Then I tried:


XXJVT, which was installed together with CM10. And it worked almost as bad again (no signal in our apartment, where previously another Samsung Galaxy S had connection);
JW1, JW4 (radio-cm-7-GalaxyS-JW4-signed.zip), which were bad again;
Modem_XXJVT-CWM3.zip (again XXJVT) couldn't be installed into my device with CM10 from my CWM-based recovery (something incompatible); radio-cm-7-GalaxyS-JVT-signed.zip, which worked bad;
and, finally, ZSJPG_ICS.CM.I9000.zip (from CM10 files) works better! -- it has better signal in many places (but not as good as some other old mobile telephones with the same SIM card in the same places). (I saw a good reference to ZSJPG in a message at xda-developers from April 2012: "What do you prefer for a good stable rom in Holland? -- ZSJPG..best modem ever made"; I started searching for it because I saw it among the popular/most-downloaded radio-modem-firmwares for SGS at 4pda.ru (in Russian); in another thread at 4pda.ru (in Russian), it is listed among the modems for Asia, and there is a comment below saying that JPG was the only one that worked good for that person in an office building.)


(Feel free to give other good tested radio firmwares here, if you have some experience or information!)