I have gone through several different options on router tables. I needed to make several duplicate Christmas decorations for my wife a few years ago so I made this and then used it for a long time.
The top is two pieces of 1/2 inch plywood glued together with a hole in the top. The craftsman has a small about of adjustability but just enough to fine tune the depth of the bit. The majority of my router work is to round or chamfer edges to I don't need a fence that often.
Then I decided that I was going to build a router lift into my table saw cabinet. I bought a router plate on craigslist and bought plans from stumpy nubs website for a DIY router lift. Then I found a local woodworker selling a bunch of his tools, he wanted $500 for this router table.
I knew priced new the Incra fence was $300+, the router lift is 300+ and the 3.5 HP router is 300+. Not to mention the T-track, on/off switch and the actual table and wheels. I offered $450 and we settled on $475.
But it was a case of buying it because it was a good deal but not really being able to use it. I don't have space for a separate free standing router table and the incra positioner with a drawer full of box joint and dovetail patterns is way more fence than I will ever need.
I took the router and on/off switch from the table and sold the table with the lift and fence on craigslist for $400. S basically bought a monster router and switch for $75.
I did finally build my table saw cabinet and bought the woodpecker lift on sale at wood craft instead of building my own.
I still use it for mostly edges but am going to build a fence that will ride on the table saw fence with some dust collection built in.
Don't know if that helps you any. If I were you I would splurge on a good router and lift and then build the table to the size and shape that fits your needs.