Only 4 at the moment.
A 6yr old custom build for the desktop, 965BE liquid cooled, 16Gb Corsair RAM, 2x HD6970s, 1TB WD Black for storage and 256GB Samsung Evo ProSSD for system. Struggles on some of the newer games, but I don't really play games. It still handles 4-5 virtual machines without an issue, and it still responds quicker than I can think half the time so it does the job.
A 6yr old custom built NAS running intel E8500, 4Gb DDR2 RAM, 60Gb OCZ SSD, 7x 1TB Samsung drives in RAID 5 (all original and been running pretty much 24/7 for past 6 years, I can't fault them) 8 port Rocketraid SAS card, on Ubuntu 14.04 serving files and a headless virtualbox for a couple of web servers/test servers.
A 5yr old i5 HP laptop with 128Gb Samsung SSD, 1Tb SSHD for storage and 8GB Corsair RAM.
Last but not least, my humble media centre. A custom built, Athlon2, 4Gb RAM, 2x 2TB and 60Gb SSD. Also 5+ years old.
I have to say, I'm still happy with all of them. They all run very well, the SSDs make them snappy enough, and I haven't really had to spend any money on any of them since first building/buying.
Then there's the 2x tomato routers, one on permanent VPN and the other acting as a wireless bridge to borrow a friend's wifi
