Well, I'm certainly not in this hobby to make money, Alex! That's for sure. (I buy high and sell low!

) Yes, it hurt having to sell an expensive pair of headphones for what amounted to a bargain price. But, with the LCD 3's just sitting here not being used, (much less not being enjoyed), I thought I'd better get what I could for them now (thinking that the longer I hold onto them, the harder they'll be to sell). I should've let them go long before now, since after trying to like them, and wanting to like them (and after spending that kind of money on headphones, you TRY to like them! Ha!) But, after giving up on them, no matter how much I tried to like them, I'm trying to lessen the damage and turn a negative into a positive, here. At least with the money that I got from the sell of the 3's, I'll be able to buy a pair of T90's and still have money left over. It was just an expensive experiment for me to find out what the LCD 3's sounded like. The fact that so many people seem to like those headphones made them easier to sell, but the reason for that will always remain a mystery to me. I still don't get it. Listening to those things sounded like someone had thrown a blanket over your speakers and you were trying to hear the music through some (fairly thick) material that had been draped over both the midrange and the tweeters. Or, so it seemed to me. Oh, well. To each, their own.
With the T90's not being as universally popular, they would be tougher to re-sell. I was thinking about that even before I hit the "buy now" button. But, with the T90's priced as they are now, we're not talking about uber-expensive headphones, either. But anyway, I don't think I'll have that to worry about.
Nothing wrong with changing-out different components and doing some buying and selling from time to time just to experiment and to get an improved sound (or, to just get a different sound). That's one of the things that makes this hobby fun.
(Like the couple of posts just above this one. Tweaking the sound more to your liking, or just wanting a slightly- different or slightly-improved sound by changing-out pads and/or maybe doing a re-cable).
My mistake was, I "went big" on an expensive h/p that I didn't even get to enjoy for the time that I had it. That's the thing with buying this particular planar h/p. It pretty much "is what it is." If you don't like what it sounds like from the beginning, then changing-out pads or switching-out the cable probably won't change your mind about them. I didn't bother with doing either with the LCD-3. I knew that making either change wouldn't make that h/p sound dramatically different or change the inherent sound qualities of it.
I've got high hopes for the tesla T90. I DO wish that the T90 had been designed with a detachable cable, though. (And, I've always liked the idea of the "Y" cable, where you have separate cables leading from both earcups and having each transducer wired directly to the h/p cable). But, this won't be an issue if I like how this headphone sounds.
In reading this thread, I'm thinking that the T90 will pretty much be my cup of tea. I'm hoping so, anyway.