Resales are often cheaper - but by the time you pay closing costs and figure in the costs of borrowed points, the value may be more of a wash.
Disney is faster and more predictable. Your sales guide will help you get reservations before closing. With a resale, you could close in a few weeks, or it could take three months - and you won't be able to make a reservation until about 2-5 business days after closing.
Disney is selling BCV and will soon be selling Saratoga Springs. There are few BCV resales availalble and if that is your resort of choice, Disney is your best bet. However, if you want a different onsite resort, you will need to be resale.
Disney will arrange financing. Resales are generally finance yourself - which is often a better deal anyway.
As to maintenence fees, figure what $1000 a year is getting you in terms of accomodations, and then decide for yourself if its a bargain. Our next trip will be about $280 points at $4 a point in maintenance fees -- $1120. For a little over $1000, we will stay in a two bedroom villa for a week. Last year, we booked two rooms at Wilderness Lodge for a week, the total was over $3000.