I use 43% mf on my amazon and do Pit Runs. Doing about 3 weeks worth these are my finds:

3x Shaefers Hammer
1x Grandfather
1x Windfore
2x Facets
1x Perfect Echutas
1x Vex Rune
2x Verdugoes
2x Windhammer
4x Spirit Ward
2x Ormus
1x Mal
1x Maras Keliedescope
2x Gore Riders
1x Dracules Grasp
5x Elite 4 Socket Eth Shields all with at least 28 Res
1x Non Eth 6 Socket Superior Zerker Axe
3x 6 Socket Crusader Bow

and a bunch of other random shit. My amazon is 99 and i do beleive in 1.10 MF has mroe to do with level then the MF gear itself. Also remember anything over 450% MF is very useless. MF is a higher % chance to find MAGIC ITEMS. Not rares, not unqiuws, just magical. Rares and unqiues simple drop a lil more often due to having magical antributes. SO the more MF you use, the more MAGICAL items you find.