if you do a lot of typing, a table can be challenging for some...large fingered.
but if you are competent, you can get used to a monitor keyboard, but it will never be exactly as comfortable or as proficient.
as mentioned above, most comp's in that price range of say... 400-650'ish are pretty much all similar, so you have to choose by reputation and customer service.
when you find one post it here and we can see if anything is lacking.