the load will totally depend on the amps you choose, and how many subs you use. no difference in sound either way.
I'd strongly suggest you audition the treo and ID subs to see which you like. both are very good subs.. its mostly subjective at that point. for a box, in an S10 go sealed.
so any specific model numbers of the two? what im asking is not just the brand but the series and the class along with the model number like the IDMAX12 v3 ppl say its a very good woofer. is that there top sound quality woofer? if so which of teh treo woofers does it compare or in the same class as.