This compilation reflects David Bowie's early career in that it is a mixed bag in terms of quality and style, but there is enough good stuff here to warrant a purchase for anybody interested in his early years.
Currently you can't get a CD of his 1967 debut album and although most of it is on this CD a couple of the original tracks are missing. Also, the version of Rubber Band isn't as good as the album take.
I would recommend the Deram Anthology CD over this as all the songs from this period are on it and you get both the single and album mixes.
But if this is cheap enough then buy it and download the missing tracks.