well pine wood is softwood. so your mulch is going to breakdown faster than hardwood. And pine is generally less weight than hardwood, so when it rains, the rain will build up under the mulch and it will wash away. Believe me I know first hand. Last year I took a job working for another company when I thought I was going to sell my business, and we used pine bark mulch. We were doing an install at a place all summer long. The mulch we installed at the beginning of the year (May/June) was already over 50% deteriorated by september/october and we put down 2-3" layers. Then everytime it rained the mulch was all at the outside of the beds, or in the parking lots etc.
Your hardwood will last you a season easily if you put it on right, and wont be so easy to get washed out from heavy rain. Single ground is going to look more like something woodchips, bigger chunks, not a lot of fine material. Double ground will look more like dirt almost, but with small wood chips mixed in.
I prefer to use double ground hardwood brown mulch. Regular hardwood mulch, will be a light brown tha will turn to a greyish color in a few weeks. The brown mulch we get is dyed and has a deep chocolate brown color, and by the end of the year its still pretty dark so it looks nicer.
Just note, that if you get dyed brown, find out if your getting natural mulch thats dyed or if your getting Enviro mulch, or recycled mulch or what have you. Thats basically reycled wood products (wood, pallets, etc) thrown through the grinder and dyed brown. Looks nice, but its garbage mulch. Doesn provide the natural nutrients for the plants like mulch