Bought my '14 1300A with a Corbin seat and Smuggler trunk, but didn't really care for either: found the seat to be too hard, and never used the Smuggler and had a hard time avoiding kicking and scuffing it when swinging my stiff old man leg over the bike - removed and sold on eBay.
The stock seat.
Looks nice on the bike, IMO, but my first long ride of 150+ miles (yah I know for many FJR riders that is like a run to the corner store to buy milk or a pack of smokes) I noticed all the pressure was concentrated on my tailbone, and the forward slope of the seat seemed to have me seated forward, just behind the tank.
Tried the bike in the raised position, and while that was more comfortable for my legs, it caused more forward bend, making my arms, wrists, and between my shoulder blades more sore, along with placing my head completely above the windscreen at the high position - so put it back to the low/standard position.
Considered (and still considering) a Sargent, etc., but thought I would try to mess with the stock seat a bit first, as I am already spending lots of $$ on other items for the bike.
Purchased this 5/8" thick Gel pad off Amazon - with tax was about $45:
Many/most of the gel pads available were only 1cm in thickness, and in the ratings and comments many complained it was too thin. This particular piece was actually the correct shape and size for the FJR seat.
Pad was very cushy yet firm, very sticky, but the instructions said dusting it with Talcum or cornstarch was recommended if one did not care for the extreme stickiness, which I went ahead and did.
This is the pad sitting on top of the seat, note the sizing is pretty much right on.
The pad as it came, and after dusting.