What did you replace them with? I am starting to look into alternatives my self as I can see the noose they have around their user's neck's slowly starting to close.
HPE Instant On is pretty nice. Zero problems over the last seven years. It literally just works, including seamless handoffs between multiple APs.
If you are at home and want to do DIY you can put OpenWRT on quite a few of them in case you don't want to sell them or dump them as e-waste.