21690 seems to be more energy efficient than 29020. Also I think it can manage active sync and GPRS/Edge connections better than 29020. But some users report that they have problem with wireless. I use 21690 without any problem on my omnia everyday.
29020 is on the other side.
All these Information are based on the general feeling of people.
What is known is that both of these builds are the latest release from dft. 21690 is used to be developed by HTC. 29020 has unknown origin. 29020 chosen by HTC HD2 users by a ballot of Energy rom users.
Keiv, now i use your 21690 version 1.2, it awsome.. no wireless issue again, no error when i want to switch from camera to video recorder.
but i found one problem. in s2u2 and opera mobile 10, i can't slide the screen...
i solve that problem by disabling ftouchsl (turn off), and now everything is oke, thanks for your awsome ROM..
only GPS that i do not try yet, but with your previous ROM, it can work, i think (hope) with this ROM it will work too, unless you modify GPS section of this ROM.
one question again, how long normally omnia battrey life using 21690 with normal use?
PS: thanks for your guide to flash using win7, it helps me a lot cos my notebook already using win7 and i dont have win XP anymore, for samsung driver, my notebook cannot found from driver you attached, it need internet connection to search from online resources (microsoft)automaticaly when i restart my omnia for 1st time. after driver founded, downloaded and installed automatically, i have no problem with next steps. thanks again keivan