Today I tried using this unit as a means of medium-to-long range anti armor:
Leman Russ Exterminator
That amounts to 4 twin-linked STR 8 shots, one STR 10 shot, and 2 STR 9 melta shots, all hitting on 3s. Needless to say, I was extremely impressed. It is a little on the pricey side because of Pask, but it shredded a Rhino, 2 Land Speeders at the same time (in a squadron), a Predator, and a Vindicator over the course of 4 turns. It may have just been a lucky game, but as always I will continue to test it in battle. If I ever think a unit is not pulling its weight, I am quick to cut it out of my lists, but for right now this unit has definitely earned its keep. I think you guys should try it out also.
Side Note: The cool thing is, this same exact setup should also be extremely effective against monstrous creatures, thanks to Pask. I have yet to try it out against an army such as Nids, though.