I am a project manager, we installed [url=http://www.squashtest.org/index.php/fr/outilsfonctionnalites/squash-tm:vuyosgi8]SquashTM[/url:vuyosgi8] last month to organize our functional tests. So far the team seems to be pleased with it. Even if there is a lack of documentation the tool is pretty intuitive and the team answers fast to anny question on the forum.
Many of the defects we saw have been corrected in its last version (especially the resize of the text-edition boxes and the test-suites).
As drawbacks i would cite a lack of reporting so far (the manager speaking ^^) .
It seems to me that Squash TM is not perfect because it is still recent but what made me choose it is the comming of [url=http://www.squashtest.org/index.php/en/component/content/article/136-squash-tadata-pour-fin-avril:vuyosgi8]Squash TA/Data[/url:vuyosgi8].
I would be curious to have the opinion of other users too, especially from ones that are maybe more used to other tools than me ? Or from ones that have huge amount of data to process ? ?