Imho the LG H55 is not a good drive, the Renesas line are at the moment the better LGs. The H44 is a near perfect burner. Pioneer 112 could als worth a consideration if DL burning is very important.
I have both a H44N and a Samsung SH-S203B. The Samsung is ok but I would clearly favor the LG, less noise, overall better burns with less jitter and with a wider range of media.