Larica Liebenzeller Metal Rosin

Pros: Immediate improvement to sound with a smooth and rich tone. The block lasts a long time; I've had mine ages and it's nowhere near used up. Low dust both when applying and playing with little residue on viola and strings.

Cons: Large box is a bit of a pain (make pouches standard please...). Need to reapply fairly frequently if doing a lot of playing.

Other: This rosin is quite hard (though smooth) so a fair bit of pressure is required to apply properly to the hair. Long, smooth, firm strokes work better than back-and-forth short rubs.

Pros: Quality product which always helps create a fine sound.

Cons: Expensive but you pay for what you get.

Pros: gives a good tone if you can apply just the right amount

Cons: difficult to get the right amount on the bow

Pros: Very happy with this rosin, which I bought following the recommendation from Julian Ogilvie in the recent London Cello Society newsletter. As per Julian's recommendation, I use it for my cello bow (not violin or viola), and it does seem to help the bow to move more smoothly across the strings than my old rosin did.

Cons: Quite expensive, but I am hoping it will last me many years.

Pros: Excellent product.

Cons: Box to costly and large. Cloth a bit small.

Other: Rated 5 with the above matters addressed.