Get either a CMStorm Quickfire Rapid with Cherry MX Blue or Green switches, I sampled some MX Blues at Walmart on a Blackwidow Ultimate 2013 keyboard, felt and sounded epic, however the Quickfire Rapid is built better and is cheaper. IBM Model M or UNICOMP Classic 101 Buckling Spring and Dell AT101 with ALPS CM Black switches are good choices too, however I really liked the sound and feel of the MX Blues when I sampled them yesterday at Walmart.
Quickfire Rapid with Blues or Greens would definitely be sweet to have in my lap while sitting back and doing whatever though.
Blues are good if you want a clicky that's easier to press, while Greens are closer to a Model M on actuation force.
Hardware: HP dc5750. 1.8GHz AMD Sempron 3400+. 1.5GB RAM. 80GB HDD. ATI Radeon Xpress 1150 on-board graphics with Gallium r300g driver. Realtek ALC260 on-board audio. DVD burner. Realtek RTL8191SU 802.11n WLAN Adapter. | OS: Arch 32-bit. Kernel: 3.14.1-1-ARCH. DM/DE combo: LXDM and MATE + Compton.