also consider when comparing
Also it's going to be next to impossible to compare the Pinnacle speakers to the Bostons. Given that the Pinnacles are full range speakers (29 on the bottom range) and the Bostons are bookshelf (bottoms out at about 59 or 60 I seem to recall) .... not a fair comparsion.
The Bostons have to have a sub to compliment them .... the Pinnacles 'could' be used without the sub and still produce pretty decent audio out.