Thank you Omsed, that's exactly what I wanted to hear. The reason I claimed thin speakers were neutral was because of the shear number of hifi speakers out there that sound thin. My mistaken assumption was that the majority of them would be accurate from a tonal standpoint, and I was thinking that I needed something a little colored, or "inaccurate". I absolutely know that real music is supposed to have the power and richness that I'm searching for.
Speakers with fullness and weight?
I've always made a concerted effort to hear as many speakers as I can, but I've only found a few lines that have some of the qualities I particularly value. Quite a bit of my music collection includes modern alternative rock/electronic that is a lot less enjoyable when played back on speakers that are too honest (read: thin sounding). My current speakers (Vienna Acoustics Mozart SEs) really give the music a weight and solidity that is often hard for me to find in hifi. I love how the drums give a really hefty thunk, and guitars seem full and rich rather than nasally. This probably just correlates to an increased midbass and relaxed treble, but all the same, any suggestions of other brands would be appreciated. Older Monitor Audio speakers also seem to have this characteristic.