Hi, chin aleong,
Do you have any router(s) now? If not I recommend starting with a router kit that includes 2 bases. That way you can put the fixed base in the table and have the plunge base for free hand. If you get one of the more popular brands(porter cable,bosch,hitachi,etc),you can usually find spare bases on ebay fairly cheap. I have 1 router motor,1 plunge base,and 2 fixed bases.
If you've allready got a good handheld router and are just looking for a larger one for a table. The hitachi m12 seems to be pretty popular here as you get a lot of hp for the buck. I plan to get one someday, but so far hav'nt found the limit of my 2.25 hp hitachi.