I just bought SPDR recently (December 2024) from a fellow soundie here in the UK. Have to say that I am impressed with it especially that it's now an 8 years old recorder. Here are the reasons why it is still a valid choice in 2024.
As a location sound mixer I have used a lot of up-to-date recorders with 32 bit float, I own couple of Tentacle Track E's and I have tested all F-series Zooms as well. Those are all lovely with their bluetooth, larger displays, animated menus etc, but Lectro is very much on par in terms of sound quality and has other useful functions. I haven't done any scientific tests (mainly because I don't really see the need) but to my ears it sounds absolutely brilliant - using the pair of DPA 4060s I'm able to record crystal clear AB stereo image for several hours on two Eneloop batteries.
Timecode generator jammed in the morning with Tentacle system had no drift after 10 hours - I was recording backup mix all day long and was also drawing power from the distro and a smart battery instead of AA's. AA batteries were there for safety.
It is good to know that Lectrosonics are still supporting it - last firmware update was as recently as in July 2024. I can pretty much promise you that Tascam and Zoom in 2030 won't spare a single hour on updates for today's gear...
As for the menu. I have read somewhere that it is clunky and outdated. Is it really? Probably for the younger generation who is used to 5 inch displays in 16 million colours

I think it is pretty intuitive and because actual display it tiny, it doesn't draw too much power either. My only complain (but this is me being an old fart with deteriorating eyesight) is that I struggle a bit seeing it without glasses.
Another (not mine) problem reported by someone is the fact you can't switch off the limiter or LF rolloff. If I can set it down to 35hz in the menu I have no problem with it at all. My 50 yo ears can't hear anything this low anyway

All in all I am pretty happy with the purchase especially that I have paid less than a half of the original price from 2018 and had few cables (incl AES) thrown into the bargain.
BTW... this security check and questions if you want to post!!! Jeeez