Best choice: 21" monitor, 19" monitor, or 20" TV in cab built for 19"?

[Dougmeister]

Willing to mount either way, leaning towards vertical.

1) Will this 21" work in my Space Duel cabinet?

Horizontally?  Vertically?

Dimensions: 19.9W X 19.1H X 20.7D

For butt-ugly picture, go here:

http://www.computersurplusoutlet.com/viewproduct.asp?ProductID=MON-KDS21

2) Is $100 shipped a good price for this used 21" monitor?

3) Or should I get the 20" Apex non-flat TV @ CC for $100?

[/url]http://www.circuitcity.com/detail.jsp?c=1&b=g&u=c&catoid=-11482&qp=0370637083720&oid=72759&m=0[/url]

4) Or the 19" KDS Flatscreen monitor from Office Depot for $77 (after coupon and rebates)?

http://www.officedepot.com/ddSKU.do?level=SK&id=558866

(Edit: Out of stock at the moment... I waited too long)

Quotes from other related thread that may help:

Jabone

the inside width from end-to-end is something like 23-1/2" or so in the cabinet, more than sufficient for a 19 or 20" television but very little else.  This is a very narrow cabinet really, ideal for vertical monitors or 19" horizontals.

I've looked at 25" tv's for the cabinet but all of them are too wide.  I've bought an Apex flat-screen 20" TV that gave me a few more inches that looks awesome, and I've considered simply rotating this TV on it's side so at least vertical games could be played with very adequate height (I've experimented with having the TV on its side for days and days and have had no problems).  But a 19" TV, horizontally placed, looks great too.

Ken Layton:

Space Duel was an X-Y (a.k.a. Vector) monitor game. It used a 19" horizontal monitor.

[Dougmeister]

Nix the 20" TV.  Would be more "arcade-like", but doesn't have S-Video inputs and I like the flexibility of the computer monitors.

Also leaning toward the 21" over the 19".

So main question in my mind is #1: will the 21" fit in my cabinet? I am going to try to get access to it tonight so I can measure it myself, but the waiting is killing me.