What are pros/cons of 2.25" vs wider flooring?

I think that we have decided on either a Rustic Grade prefinished or Country Grade prefinished Red Oak flooring from Floormall.com for our beach house. My wife and I think that these "rough distressed grades" would look great in a beach setting and certainly the cost savings of dropping to these grades are very attractive. The companys website indicates that this flooring is available in widths 2.25" up to 5.25". What are the pros and cons to consider when thinking about hardwood widths. Is it only a matter of preference or are there additional issues to consider.

I also did a search for Floormall.com and found nothing. Has anyone had any experience dealing with this company?

Thanks in advance

 

The wider the boards, the less dimensionally stable. There is a greater chance of cupping and crowning if there are moisture and humidity issues. There should be no greater moisture content difference than 2% between planks and subfloor and no more than 4% difference if using 2 1/4" strip. A moisture meter is used to test content. Wood should be placed in rooms where it is to be installed and left to set for several days to adjust to temperature and humidity before installation. Continue to acclimate if moisture difference exceeds recommended limits.

 

So, is the down side to installing 2.25 inch hardwood simply the added cost of installation (more nails)? I had thought that the wider boards would also cost more but, at least in this grade of wood this is not the case.