BDR-209 (& 208) series supports writing to M-DISC BD-R. Unfortunately they do not seem to support writing to M-DISC DVD media (reading should be supported). As you noted, EBK/MBK/UBK models (unavailable to you) are the models which support BDXL (the 2209 Stereodude mentioned is the equivalent of a 209M). But BDXL media is unlikely to be a big concern.
LG 14x and 16x drives should all support writing to M-DISC DVD-R & BD-R, as well as the (fairly rare & expensive) BDXL media.
Only you can decide if BDXL support or M-DISC support is important. For M-DISC, no one knows how long 'normal' media will last, though if you get good BD or DVD media to begin with, it shouldn't be a problem. BDXL is only important if you want more than 50 GB of storage space on one disc (keep in mind that you'll be spending 3 or more hours to write one full BDXL disc).
They both seem to have a similar longevity. Keep your expectations realistic in this area, and don't keep the drive constantly active at high speeds to have a greater chance of a good drive life.
Ripping: people have indeed commented that the LG is a bit faster, but should the Pioneer available to you be cheaper, the decrease in reading speed shouldn't matter too much for casual reading needs.