We think entry #8 is the best one so far.
#5: We believe that the dotted line from the "i" to the "c" illustrates the feeling that we are "virtually everywhere". We like that!
#7: We love the shadow work!
#9: Again, this logo gives the feeling that we are everywhere.
#10: We think the logo is cool, but we would prefer to have a "balloon" without an edgy cursor.
Overall we believe your logos are satisfying.
Good Work,
The VirCall team