The 5 Percent are normal. That you have on any Rom.
100 to 90 goes always very fast
It seems pretty clear that both brickbats and bouquets are due to the developers of the ROM -- if one reads "commercial" reviews for the phone at time of its retail release one of the positive comments (by several reviewers) made was in reference to its capacity to last -- more recently, in terms of value for money, the G300 on stock ROM fares much better in such evaluations than its bigger brother the G600 (which has a faster processor - are people comparing like for like, or capacity to last if overclocked -- though some would say some phones can last longer if overclocked);
and concerns over call quality persist -- though locally (here in New Zealand) I haven't noticed such problems.
So, those are some of the brickbats.
On the other hand, generally the phone and its responsiveness seem very good -- I've only recently installed a new ROM on its baby brother, the U8650, installing CM7.2 Benru89 R4, which, lthough I can now install and "run" many more programs than I could before (having cleared out the bloatware I presume), the OS as a whole is an absolute pig to run --- with very great delays in building / re-building the screen (on startup, boot, return after going to the app drawer, finding apps in the drawer etc etc -- problems I have NEVER had with this ROM, and people seem to run most apps that they want to without too much hassle (things like Spirit FM etc, good barcode scans, photography -- as a NON-phone phone it seems very good indeed ;-)
but when's the next release coming so that we can have a phone-phone that lasts and works well as a phone?
(and if someone wants to suggest an alternative GB OS ROM for my 8650, I'd be even more grateful)