The first couple of episodes of Partners feel a little too manic, like the show is trying too hard to recapture the glory of Will & Grace (both shows share the same creators and a relatively similar premise). Comedy series tend to take a little time to find the right tone and have their cast really develop chemistry with each other, however, and Partners is no different. By the mid-point of the season the cast seem to bounce off of each other effortlessly and the show starts to find its feet as a lighter, more good-natured, modern take on Will & Grace with some genuinely enjoyable episodes. Unfortunately, this was after the show had already been cancelled.
That being said, the show is definitely worth a watch if you can find it and want something light and sweet. The best episodes are generally among the unaired ones ("Pretty Funny" is a pretty funny highlight). David Krumholtz and Michael Urie serve as excellent foils for one another, Sophia Bush is utterly adorable and Brandon Routh manages to mine a lot of humour out of being hunky yet totally naive.