IM50 has a massive bass which gets better with burn in, so it's in my "moderate" basshead category. Tenore has a great detailed warm signature with an amazing soundstage for those occasions when you want to feel like you are in the middle of the concert Doppios are blowing a lid with their reference like clarity and increasing burn in improvement in bass response (but damn, that high sensitivity ). With IM03 you get strong bass, though less sub-bass in comparison to IM50, and a more detailed and wider sound (in comparison to IM50 as well). As I mentioned before $200 or whatever less is a great deal.
B6ottom line, it's so hard to make a decision in choosing one because they all offer something unique. If you are narrowing to sub $70 price and deciding between IM50 and Tenore - it's comes down to if you want a slamming bass with a tough build-design - IM50 are perfect for working out to get you pumping, to stay in your ears thanks to behind-the-ehhyar memory wire, and to give you piece of mind with removable cables. Or if you want a tiny lightweight piston shells with a detailed warm sound and wide soundstage - Tenore is your friend, though you might need to get an amp to drive those due to low sensitivity. Personally, if I would have to choose only one, it would be IM50, because of the bass, vocal clarify, and tough build w/RC. With Tenore alternatives, I'm still waiting to receive my KC06 and KC06A (with extra bass, I think "A" might be a better match for Tenore), and also we have an upcoming over-hyped VSD3/VSD5.
On a separate note, I have a huge interest in FX-850 to the point where I'm even willing to trade my W40 for a pair of fresh 850 woodies
Thanks, but I think I should stop reading your posts - you make me want everything lol. Fwiw, I have the kc06's and love them, so I'm looking forward to your thoughts. And I loved my tenores, even though they were problematic (getting an exchange pair). I also have been lusting over the 850's for a while, but recent forces have got me lusting for the im03's. And yeah, I forgot about those damned vzonics!