Bigger isn't necessarily better , sorry has become my little mission atm.
sheesh I am so boooooooooooring
Here's my 2 pence worth.
Ok so you'll have a budget on how much you want to spend on a tent. Within that budget you will have to choose:
size
berth size
materials/hydrostatic head
brand
design/lay out
extras (like footprints and carpets)
It's going to be compromise all the way along, so if you go for a LARGE tent within your budget then you are going to be making compromises a bit on what it is made of (and how water proof the fabric is, that is the hysdrostatic head) and who has made it.
As in all things there are 'value' brands, and at the other end of the spectrum brands that you are paying a premium for as they are so well made and designed to last or to camp in for all 4 seasons.
So, gets back to the pont, if you wander around a tent show ground and find a tent calling to you, then go for it, but keep in mind that there are lots of factors that will have made it the cost that it is iyswim.