htm3s vs. htm1... what are the differences???

i currently have for my front sound stage for home theater
804"s" and htm4"s" i was looking at getting a htm3"s"... i cannot seem to find a good one at a good price. i have seen alt of the older htm1.

so would the htm1 be a good match for my 804"s"?
should i just keep the htm4"s"?
should i just wait and find a htm3"s" ?

thank you
Anyone? anyone ?
Maybe this is not a good idea since no one else has done this. or have information on it.