I'm getting mine installed next week - and my trailer is only 3 months old!
I've not seen anybody say that they are disappointed with disc brakes and wished they had not converted...most with, say they won't have another trailer without them.
They are expensive....your call OP.
Mike
2017 GMC 3500 Sierra Denali, C/C, D/A, DRW, w/40gal Aux tank, 18K B&W Patriot.
2019 Cedar Creek Hathaway, 34RL2 - w/Bells & Whistles and disc brakes
Traded 2009 Cedar Creek Silverback, GII, 32 WRL