Ok, so now which one of you is going to get all of the plate manufacturers together on a telephone conference call and get them to agree on plate size? Of course, the
proper plate size coincidentally happens to be the exact same size as the Woodhaven plate. Imagine that.
I agree that having a plate for each router is a big convenience if you use multiple routers for multiple tasks. I have two routers but nearly always use my Freud FT2000 in the table. I just haven't had the need to use another router since it does anything I want it to in the table. But there are times where it would be nice to have a second or third when I'm switching back and forth between 2 or 3 bits. That would save having to reset the bit height. But I'm not usually in such a hurry that this is anything more than an inconvenience. But if I ever decide to switch to a plate with a router lift I'll either have to use something from Woodhaven, modify a lift to fit a Woodhaven plate, find another brand that's the same size as the Woodhaven plate, or make another table.
Woodhaven makes quite a few really cool products for routers including their, "Angle Eze"
http://www.woodhaven.com/detail.aspx?ID=1546 . I don't think I've ever seen another one like this. Woodpeckers is another company that makes some really cool quality products and they just happen to match Woodhaven's plate size. Their Plunge Lift,
http://www.woodpeck.com/plungelift.html looks great for anyone with a plunge router and they also sell some other lift plates for non-plunge routers,
http://www.woodpeck.com/liftshome.html . They also have regular router plates without lifts and from what I've seen they use the Woodhaven 9 1/4" x 11 3/4" plate size. Coincidence that the two best router plate and accessories manufacturers share the same size?

Well, possibly but it sure is convenient since they both make numerous products that I consider to be the best in their category. That Woodpecker stuff sure ain't cheap though. It doesn't look cheap to make either though.
Anyone looking for an extremely versatile horizontal router table should check out the one from Woodhaven.
http://www.woodhaven.com/SearchResult.aspx?CategoryID=29 They look to be very well thought out and constructed and if you combine one with their Angle Eze you get something that nobody else offers for any price. Wish I could afford one. :'(
The Ebay store, Big Leroy's, sells Woodhaven and Woodpecker stuff and he used to have a deal for the horizontal router table with Angle Eze and a router motor for a combined price that was less than you could buy just the table directly from Woodhaven. I don't think he still has that deal but I think he will make deals with you on things he doesn't list on his website. Nice guy too. Router stuff sure is cool, isn't it?
Bruce