Korean Air Skypass - Equipment change makes me weary...

I'm flying to Bangkok next month through ICN (from JFK) and as I'm about to hit the 30 day mark (so I can finally pick seats) I just looked at my itinerary and noticed a disappointing change of equipment on one of my legs. Luckily I'm on the A-380 out there and back so that's a bright spot, but the return leg from BKK to ICN went from a 777 to a 737-800 with winglets (assuming it was a demand issue on the route that the 1.45am flight was pretty light). According to the website it is a newly refurbished plane with power and AVOD. We're in prestige so I'm assuming its the older style, reclining seats. Has anyone flown one of these? Just wondering what its like or if anyone can shed some light on what to expect. I'm assuming its probably a bit similar to the standard business elite style flight and service, but a bit weary of what to expect on a 737...

It is just OK. Single aisle and not as much room to stretch legs etc. Just OK.

Early last month I flew ICN-BKK in economy and they swapped in an older 737. No AVOD in economy. The return flight at the end of the month was back to the 777.

Early last month I flew ICN-BKK in economy and they swapped in an older 737. No AVOD in economy. The return flight at the end of the month was back to the 777.

I've got the reverse. ICN-BKK is on the 777 and back is on the 737. According to the website Prestige has AVOD. Any truth to that? It will be at 1.45am so I'm not totally worried, but obviously not as attractive/comfortable as the 777 is. Hoping for another equipment change back..