needing only 1.5 cubic yards, I think bagged would be the way to go. With bags you can haul them around and open them up exactly where you want them. I like to add some form of compost every year (usually over the winter). If you don't have a lot of time for weeding, then mixing in compost or rotted leaves in the late fall/early winter and letting the beds rest over the cold weather, then add a few inches of new bagged soil (any kind, as long as it is sterile and bagged - no weed seeds) on top and don't mix it in. You will spend very little time weeding. But it has to be sterile and deep, at least two inches.

Thank you John. There are different kinds of soils availables, which one is Recommanded?

Where do you get this Daddy Pete's?

It's a NC dairy farm based product, carried by most garden centers. No one ever seems to carry the entire line but Perennial Pleaser and Raised Bed Mix are what I see most often.

If you need more than just a couple of bags, bulk soil purchase is always cheaper than bagged. The Daddy Pete's bag is only 1.5 cubic feet so you would need at least 27 of them to fill your 1.5 cy beds. Not sure what the pricing is but assuming somewhere around $7 or more a bag (pretty standard for raised bed soil around here), you are looking at about $200 bucks for the bagged stuff.....how does that compare price-wise to the delivered bulk soil?

In my area, bulk soil products run about $25-40 per cubic yard, depending on the product. If you can borrow or rent a pick up, you can get the bulk soil yourself and save the delivery costs. In which case, you could be looking at a total cost of less than $100 compared to more than double that for the bagged product.