Which Burner for Dual Layer Discs in 2009

Hi all

I need a new writer for burning Dual Layer discs reliably, at present I have an LG GSA4163B & LG GSA H22N, both are old now & I think they could be too old for burning modern Dual Layer discs as I’m getting more coasters than decent burns, and thats using a variety of different brands of Blank DL discs.

I have no problem with single layer discs, the firmware on the writers is up to date so I need a new writer, the problem is opinions are so divided on what is good or not I just don’t know what to get.

Speed is not the issue for me that matters, getting the most reliable burn with as few coasters as possible is what counts for me.

I can have Sata or IDE so please can someone help.