Stratum mining allows LTC pools to achieve less than 0.5% stales. The only current pool to implement it is ltcmine.ru. If you check out their list of miners there, you will see that many are mining with quantities of stales as low as 0.2%.
Latest version of cgminer to support it is 2.10.2
The reaper version that supports stratum is here: https://bitcointalksearch.org/topic/m.1372243
I think as a community we work on getting stratum support for more pools, so that you guys pool mining all get more litecoin. Currently, PoolServerJ supports both litecoin mining and stratum.
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