OT: I used this site just a couple of weeks ago when looking for a fountain pen. Went looking for the TWSBI 540 as suggested there; ended up with the the 580 and can highly recommend it.

Whilst I did check it out, I didn't like the look of the Pilot Vanishing Point. I wasn't sure if I'd agree with the clip being at the wrong end.

And the dreadfully named Pen Island:-

http://www.penisland.net/

Don't forget Kickstarter's obsession with pens.

Cost me about $25 dollars doing that 2 months ago.