I have seen these drivers in Magnums and woodies but has anyone here ever tried them in the plastic models? As far as I can tell, you can purchase damaged SR 60is, replace the drivers with Symphones and recable it with 8 - strand wire like the 325i/225i. You would then have, in theory at least, a superior headphone set to a 225i for about the same money. I haven't tried any symphones drivers and my SR 225i right driver is dead. I have not tried the 325i either. For those who need to know what I listen to, I use these headphones for rock, metal, classical, old new wave, rockabilly, live tracks with a lot vocals/acoustics and for playing a couple of electric guitars ( Gibson Les Paul, SG, Gretsches) . I run amp and ambient space modelling software for the guitars so I can pretty much tweak the sound I get but what I can't duplicate is the sound coming out of Grados. Sennheisers and AKGs somehow don't cut it with me. The SR80i is pretty good for headphone playing, better than anything I tried for guitars. The guitar sound coming from a 225i however, to me is far more complex -- hard to describe but worth much more than the extra $ 100. The difference between the two is night and day for guitars -- to me, there is already a signficant difference for MP3s/CDs but it just isn't as apparent as with guitars. When listening to music, I play it out of Nokia N95, Nokia Lumia 920 and HTC One X (Beats audio enhancement turned off) boosted by a Fiio E5 with custom interconnects. My options are to 1) purchase a 325i with the comfort of warranties 2) purchase the Symphones X driver and install them on my 225is. I like the Grado sound and I am shooting for both quality and reliability. Another option I'm entertaining 3) purchase the 325i and Symphones drivers, A/B them and then return/sell whatever falls short of expectations. I don't want to go through with option 3 and return the 325i, business is hard enough for entrepreneurs nowadays. I don't want anybody to go through the disappointment of a returned item ( I'm sure business owners here would understand). So, has anybody tried these in plastics? Please feel free to advise, I'm assuming whatever Grados are good for listening to music would be also good for guitars and vice-versa. Thanks in advance.