We currently have a number of sites hosted on "spingen.com" servers. Our experience has been very good, up time along with the willingness of the Webmaster to tweak and adjust to my picky needs and help when I screw something up.
Any downtime we have experienced with Spingen.com has been schedule updates to the Plesk server which we are on, I know that they also have FreeBSD but our sites are located on one of their Plesk server boxes.
Currently I have 2 personal sites, the largest is CAWEBGuys.com which burns up about a 2GB a month of bandwidth. Plus I have 6 client corporate client sites also hosted by them one which operates with a hell of a lot of email accounts.
Can't say much more than I have had only good experience with them.
This is a late reply but just in case anybody else reads this: Fastwebsites are blatently dishonest, a year later and I am still getting the promise of my 30 day money back guarentee, sometime in the next two weeks!
They do not reply to emails if they have no use for you. A support ticket on thier site saying that I could not use ftp to upload my site remains unanswered a year on. At the time I faxed, telephoned and emailed!
A foot note also beware of credit cards, thinking they protect you. In this clear and documented case of refund in thirty days not honoured the credit card company Egg from the UK say they can not help me and that I should take it up with Advertising Standards.
Buyer beware and be aware!!