A fine album for someone who does not have any Dream Theater in their collection and would like to find out what the fuss is all about. There are some great tracks on this compilation, but there could have been better choices as there are far too many quieter tracks.
The album is not so great for the fan who has everything though. The edited tracks are of no interest and one poor b-side (To Live Forever) and one inferior alternative mix (Through Her Eyes) do not provide much temptation either. The album would have worked better if it had not been split into heavy and light tracks and had just been a best of including a third CD of epics (as was considered) including A change of Seasons and Six Degrees of Inner Turbulence.
I last bought a Dream Theater album over ten years ago and since this album has come down in price, I thought I would catch up on some of the their work released in the last decade. Listening to this album has made me decide that Dream Theater should not be confined to the dusty shelves and to correct this I will definitely fill up more space and get further Dream Theater albums starting with Train of Thought and Octavarium.
To sum up, if you are a relative newbie buy it. If not, is it worth it bearing in mind the price.