between the sp-250 and sp-170, the sp-250 has, of course, more to offer. But i had the chance to put them side by side to compare, and for some reason, I liked how the sp-170 felt, although I thought they shouldn't be different considering they're the same hammer action. What do you think? Also, for some reason, I found the sp-170's sound a bit brighter, and it seems "more acoustic" than the sp-250. I thought the sp-250 sounded less realistic. I'm still deciding which one to get. Help!