Yep, I presume any banquet table you get will be far sturdier and much less expensive. And you can get TWO if you want a bigger surface, but I don't think you would need it. And you can get an adjustable banquet table from Costco (the price will likely be better in warehouse, because they include the shipping in the online price):
http://www.costco.com/Lifetime%C2%AE....11528791.html.
I haven't seen those particular tables but I've seen cutting tables. I would take a banquet table any day for the sturdiness...another nice thing is you can fold them and put them away when you don't need them.