I tried NFSFAN's ROM, but didn't like it. Simple as that. Not that it's not good, far from it, it's quite sleek actually, but I had my Touch running real well before and prefered the way I had it setup...
Now, I don't want to say the problem was the custom ROM, it is most probably something to do with the unlocking and flashing process. The ROM itself is great, the 1.28 seems really, really good and possibly the best ROM out there for the HTC Touch, but it has a lot of apps I'd never install (I prefer to download youtube videos than viewing them once only and wasting bandwidth) and something I personally really don't like, the darn TouchFlo (I hate it, just like I hate laptop Touchpads). Anyway... A question of taste and user interface, that's all. Plus all those apps that are integrated and you can't uninstall... IMO it would have been so much nicer to just offer a sleek base ROM, on which anyone could chose which options to install as cabs... But I digress, really, who am I to criticize NFSFAN's otherwise excellent work?
Anyway, the trouble started when I tried to reload the OEM EXE: I simply couldn't, got the RUU error 328 or 320 (Invalid Command). In the RUU process, the device would seemingly connect and disconnect many times, even rebooting! I know it's not caused by the RUU itself, because when using it to load a custom ROM, it works flawlessly... It's simply something in the Bell OEM EXE...
In any case, the phone radio is dead now. It's installed allright, but the phone simply won't come on. And I tried and tried, believe me!!! Spent the past 20 out of 24 hours on the problem!
So, to sum it up and answer your question: I didn't like the custom ROM and wanted to revert back to the Bell OEM ROM, which I could not, and trying nevertheless by downgrading to the Coke 0.40 loader (notice that I never downgraded the radio, so that should NOT have caused problems), to allow the OEM loader to install, basically killed it
So thanks for your response, and my question remains, if anyone has been successful reverting back, please let me know, and tell me what you did!