Bought the ATH-M50 thinking it'd be a substantial upgrade (not for me).
Bought several Fitears thinking they'd be the bees knees (not for me).
Losing a pair of Fitear 334s at the airport, got snagged on something as I ran to catch a flight.
Giving the HD 800 way too many buys and tries before finally admitting to myself it's just not the everyday headphone for me.
Going too deep down the rabbit hole for DAPs before finally realizing the AK240 was insane.
Went in for multiple CIEMs that were meh before finding the ones I wanted.

Buying Mirage speakers several times before it finally sunk in just how bad they were/are. Worst resale I have ever experienced from any audio brand at any level. Oh how the folks who paid $7500 for the TAS award winning OMD-28s must feel. Today those speakers are worth $1,000/pr if you're lucky. Not kidding.

I've made plenty of other mistakes (Parasound amps, Bel Canto DAC-3, loads of cables, PS Audio PPP, Klipsch subwoofers, custom built KGSSHV) but I was able to generally recover what I paid for those, so I don't feel too bad about it. Losing 50%+ on USED Mirage speakers though, that hurt.

LOL! I still have the nano-sats, but did lust over the OMD-28s for a while. I listened to them at one HiFi store that is now no more. Felt there was too much bass on those in that setup.

I will try to eventually measure the nano-sats. My main problem with them is that they cut off way to high into the low midrange. Even the 8 inch sub I have does not extend high enough to cover what the nanos cannot reproduce and that irks me a bit. Still, I don't fully regret the purchase. For one, they were probably one of the few solutions that would survive my little kids hands since I could place them out of reach easier than other speakers. Second, I got the whole 5.1 package for less than $500 (a $200 deal on the Energy Take 5s would have been better but not as kids friendly given installation location necesities). Third, my wife likes them. Fourth, other kid/wife/room-eye-candy option I could find were the orbs/gallo stuff, and those I can stand less than the nano-sats. Way too bright.

Seems they are discontinued now, but one may find the set (incl sub) for about $600 or so. The sub was not very good though and it died on me (amp failure). It was replaced with a Pioneer SW-8mk2 which turned out to be much higher quality and better sounding.

SR125-->RS1-->Head-F1-->SR200 (which turned out to be the best ones).

Hell yes,SR-200's are the shit. Grados have been a major problem for me as well, The GS-1ks are the second best pair I have, but I only ever use them for smooth jazz. Everything else kinda sounds like shit.

With all due respect, I would not at all regret buying a pair of OMD28s for under a grand. That is quite a good deal for the tech involved.

At around $1K I suppose they aren't the worst thing out there if you're specifically after an omni for some reason, otherwise I would avoid them even at that price. The original retail was just psychotic. After the Klipsch buyout, they discontinued the entire Mirage high-end line, and blew out remaining stock at 60+% off, which instantly made anyone's used speakers basically worthless. I'm not even sure the OMD subwoofers that were planned ever actually made it to market, I've never seen one in the wild.

Klipsch had a big buyout which IMO had the Mirage line at bargain prices (and me salivating and held back since I was living in a condo then, so no place to put them). These are pretty unique speakers. It is possible that the OMD-28 I heard was not properly setup (badly equalized or positioned). I also heard the OMD-15s at another store quickly and they were not bad at all IMO. You can still buy OMD-15 for about $500 used-like-new.

Anyhow, I just measured my Nanosats in-room at several positions and they are not bad at all. Real omnis with decent response all the way to 90 degrees  ... except they start to roll off around 200 Hz (NOT 110 Hz as the brochure says). The SW-8MK2 only goes to 150 Hz (the Nano-sub is worse at 120 Hz), so there is a FR gap in my setup, which again, irks me. Will post some measurements in another thread later.

With all due respect, I would not at all regret buying a pair of OMD28s for under a grand. That is quite a good deal for the tech involved.

Yup.