Hi Jerry
Just a note

The Vertical bit can run at higher speeds or to say at 18,ooo rpm unlike the big panel bits. the faster the bit turns the better the finish/cut and they are a bit safer to use in the jig or the vertical (Horz.) router table.
I have CMT and MLCS vertical bits and the CMT bits are a bit better than the MLCS that's to say they are sharper and will last longer and they are coated with teflon to keep them running smooth.
But this is just my 2 cents...
Here's a quick test,,,, cut two panels the same size one out of hardwood and one out of part.board (chip board) or MDF run two sides on the hardwood on the big panel bit and the other two sides with the vertical bit at high speed you will see the vertical didn't rip stock out it and made a nice smooth finish on the chip.board.
I know you will say but I don't use chip.board or MDF for door panels but you can with the vertical bits.(for painted panels)
Just one more test,,,,,,make a panel that's 3" x 4" or smaller that can be a bit tickey when you use the big panel bits or the small panel bits ( 2 1/2" dia.) but with the vertical bit it's duck soup and you get to keep all your fingers when your done making it. (small panels for a clock or a box or ??? )
----------
With this bit set (below) you can make 2 3/4" sq. panels but they are ticky to make and you must know how to run the stock by the panel bit, the high point on the panel is only 1/2" sq. in the center of the panel but again with the vertical bit it's duck soup to make a very small panel(s).
3-Piece Junior Raised Panel Set
http://www.sommerfeldtools.com/products.asp?id=19
Bj
