Yep - Gary is right. With the jaws of the bucket fully open, the back of the bucket becomes a dozer blade, but it does not angle to sidecast the material. Mine does have skid shoes on the ends, so I can tilt it back slightly to keep the cutting edge just above the gravel or pavement when moving snow. With a bobcat style quick attach system, you could get a hydraulically controlled blade that would act more like a snowplow. Could also use a hydraulic broom, or several other attachments designed for use with skid steers. I believe they even make snowblowers for skid steers, which would be easier for me to use than getting a crick in my neck moving backwards all the time.
Of course, you can close the jaws and have a regular bucket - the only drawback is if you want to haul liquids (like water for plants or livestock or wet cement) - they leak out the bottom /forums/images/graemlins/crazy.gif. If I was buying new, I would get the quick attach system and have a larger standard bucket for light materials, such as sawdust or mulch.
The 4-in-1 bucket would do everything you listed. Depending on the size of the logs, I sometimes find it faster and easier to just grip the log near the center and carry it in the 4-in-1, rather than hooking up a log chain and dragging it. This is especially helpful when stacking the logs or even holding it up out of the dirt while someone else cuts it up into firewood size. A tooth bar would be helpful for digging or scooping rocks or brush. Loaded rear tires and extra ballast may be needed, of course, with any heavy FEL work.
I have occasionally tried to pull a post out of the ground that didn't want to be pulled, and lifted the rear wheel(s) /forums/images/graemlins/shocked.gif- that can be exciting. Take it slow, even with your larger tractor, until you are sure which end will give first.
Have fun shopping, and spend some time perusing the posts here. "Experience is the best teacher -- especially if it is someone else's experience." /forums/images/graemlins/wink.gif
Oops -- I guess as a Silver member with over 130 posts, you probably already have been perusing /forums/images/graemlins/blush.gif.