bigrock:
Fact are this: If you are not going to use GPU effects, buy the 2900, it works just as good as the 190/1950 and is not 3 year old technology. If you are going to use GPU effects, there is a gamma issue with them on 2900 that you may need to correct manually if you wish to proceed.
So, the above is not fact, we should be Very careful with what we say to other users, they might want to believe us, there are low resolution probs with the 2900 card even with gpu transitions, not only with filters, several editing users have noticed this, just read the forum, this is not about old or new tech I believe, until we get a fix, it is better to use the old and certified tech so an ATI card from the 1600 - 1950 serie or an Nvidia from the 7600 - 7950 serie will do best together with certified drivers.