I am new here. I have just rejoined the world of Atari with a purchase of a 1040STE' after being without one for about 20ish years, and I have started to upgrade it. I have purchased an Ultrasatan and am waiting for its arrival. I was going to upgrade it to 4Mb, but did not have to as when I powered it up for the first time, I found it had already been upgraded

I am sure my question has been asked here, but I have been trawling through the forums and cannot find a definite answer.
I am thinking of upgrading its TOS to 2.06 from 1.62 and was wondering if I will have any compatibility problems with games. I know that low v1 TOS's are the most games compatible. I have seen messages stating that there are problems with 2.06 over 1.0x, but is there much of a difference between 1.62 and 2.06 with regard to games?
Thanks