Both weight styles have their uses.

The 50lb plastic wheel weights are great for adding traction and doesn't add any extra load to the axles since the weight is carried on the ground..

Up to four suitcase weights can be added to the X500 and they have mechanical advatage (leverage) since they hang back of the rear axle mutiplying their actual weight. The 41 lb suitcase weights add traction and also nicely counter balance a heavy front installed attachment like a snowblower. With the suitcase weights I can hardly feel the blower when steering.

I use HDAP rear tires for winter with wheel weights and 4 suitcase weights. I have chains but so far never needed them.

I'm going to be using with a snow blade. Which would you suggest?

Blading snow is much harder on the tractor and transmission so I'd get both the 50 lb wheel weights AND 4 suitcase weights for the back AND you'll be needing chains.

If you live where you get respectable snows seriously think about the 44" 2 stage JD blower. There's a limit to how far you can push successive snows to the side before your driveway gets too narrow for the car or truck. Little tractors don't have enough a$$ to really push deep snow.

Throwing the snow off to the side is easy on the tractor and a lot of fun.

Funny thing is, by the time you get the blade and angle kit the blower is only $500 more.

This isn't me and it's an X300 with the same 44" blower but you'll get the point...

http://www.youtube.com/watch?v=C0ll9yklhys

We've got the NewHolland TC 30 with a loader for really big stuff, but the blower sounds interesting.
Jerry

Moving snow one bucket at a time is pretty tedious even with a big bucket.

There's an elegance to just sitting down and driving slow while a blower effortlessly throws snow 50 yards to the side nicely frosting all the trees along the driveway.

You might look at a three point mounted PTO driven blower for the TC30.

The right tool for the job is always the right tool for the job.