I am thinking of buying a new couch. I was thinking a sectional, but then I got to looking at those antique couches. 
Sectional couches are the best. They fit perfectly in a room as they are L shape and you can have them either left or right facing and they are symmetrical. 
This is true, but do you think any sectionals may be antique style? 
I would not say they are but you could try looking at a Windsor Settee if antique is what you are going for.
I am between something antique and something modern like a sectional. Right now my living room could go either way. I want a nice, cozy home feeling. 
You should check out Urban outfitters, they sell a beautiful Chamberlin velvet sofa. 
I actually never knew they sold furniture. I will have to check that out. I think most times antique things are smaller when it comes to actual sitting space, but I could be wrong. 
Yes they are usually around the size of a two seat sofa, so I guess you need to decide if you would like something small or larger so more people can fit. 
I think maybe a sectional is best then. I really like the idea of the extended part you can fully lay out on. Nothing beats coming home from a long day and plotting down. 
I would look to getting a Sentra sectional that are made with such high quality material so will last a while. 
I have made a note of each of these to look into. Furniture hunting is never easy. Assembly is even less fun.