Finish: The X450 Wald has a greenish color to its black finish that you really cannot see unless the light hits it. Otherwise, it looks like an elegant black with gold trim. A really nice classy looking pen.
Nib: Both Smooth. The X450 has a medium nib but writes like my Van Gogh midi Broad nib, only my Visconti skips occasionally. It lays down a nice, juicy, luscious line of ink!
The SRX is a Medium nib, but more of a German-fine nib. It is a little more narrow in line than the X450 Wald. Not as juicy a line, but nice.
Converter: The X450 comes with a very nice, but push-in converter. The SRX, which costs more, comes with a cheaper-looking push-in converter that I think MAY be a problem. We will see!
Value? Wonderful pens! If you are looking for an elegant looking pen that is a smooth writer, get these now! The X450 was 14.99 and the SRX 19.99 from xfountainpens.com. You would think the X450 would cost more.
Comment: I had previously purchased an X750 and it was well made. However the feeder was misaligned to the nib and it is scratchy. Too bad because it looks like a $500 pen. But at $14.99, why send it back?
Edited by empyrean, 03 April 2011 - 03:48.