theres not many components in a LOC, just get a cheaper one.
you got a link to one of the nicer ones? whats better about em? better signal? use higher quality components?^yup thats the one.
And all LOC are not created equal. The PAC are a nice middle of the road unit. Rockford, JL, and Alpine all have factory integration units in the 300 dollar range that are much nicer.