Have a Raymarine A70D which is also discontinued but wasn't that impressed with the Fishfinder when compared to the Lowrance 527 I had and that wasn't even the HD model.
I got the A70D as also have a Ray S1000 pilot and liked the integration and the AIS functionlity too which I use, so it all depends on what your primary focus is. The A series require maps on a CF card but mine came with a MiniSD to CF adapter card, if anyone goes the Raymarine route would advise you buy your map on Mini SD card format as that will give you maximum flexibilty to use your map on difference brands of units. Eg. Lowrance use an SD card.
Am now waiting for the HDS5-Gen2 to arrive and this will be fitted on my RIB, though still haven't decided if I will be using the Transom mount 50/200 ducer like the Ray has or if I go for a thru-hull. Can then do a comparison.