My OH hand sucks donkeyFollow

Have sinister revenge MH. LPC (w/ mongoose) OH. STILL. Need some help - as the armory/spreadsheet are showing these as upgrades, but my maths are horrible and need some advice. I'm just sick of having a blue OH in ULD25. Rolfsens,Fleshshaper,Titansteel are all showing as DPS upgrades, but I thought the poison mechanics and speed of the LPC overshadow these other 3. I've got a better chance of railing Carmen Electra than I do of a shiny new toy dropping in Ulduar...so do I switch to one of the 3 aforementioned daggers?

Thanks

- nubby nubbington

yea i know...probably won't go to naxx anymore, the only 2 raid nights i've got are filled up w/ uld. just wanted to know if any of the ones above were better than the lpc...as i already have them in the bank.