Ah, but the Dark Angels are the ONLY Space Marine Force (not sure if Chaos can or not) who are able to equip Plascannons onto their Dreadnoughts, so not only do you get a mobile, all around ass kicking artillery platform, you also get a close combat unit (unless you go with missile launchers, which seems redundent when using a plas cannon) who can kill stuff *fast*. Of course, in order to take advantage of this wonderful trait of the Dark Angels Dreadnought, you can ONLY get the Plasma Cannon part through Forgeworld. I spent probably 2 hours scouring and searching and auguring the GW site for a plasma cannon for the Space Marine Dreadnought, but it kept insisting that I was *actually* looking for a Devastator Plasma Cannon, or a Chaos Dreadnought Plas Cannon. Oh, and in case any of you aren't aware, that plasma cannon from Forgeworld... 10 dollars.
Still, the look on my buddies face when he opened the brown shoe box i had wrapped in newspaper, and found a fully painted Dark Angels Dreadnought (including the Mail Order only Dark Angels Dreadnought Torso) with plasma cannon, assault cannon, lascannon, Close Combat weapon with heavy flamer, and missile launcher all painted up and decal'd out... it was worth the 60 dollars it cost me to make. He had just bought a Dark Angels Tactical Squad, so I thought I'd help him get into the hobby and got him that. Of course, they likely won't be finished till 2015 because he also has a 3500 point Lizardman army that needs assembling, priming and painting (he got them for free from his bro, whom he helped on his game store's opening day. The store is in Minnieapolis, Minnesota... need to find out the name, in case I ever find myself in that area ¬,¬)
Anyways *drags his post back on topic* I have found that Space Marines, while being good at just about everything, are inefficient killing machines overall. Look at the 'nids. Get them in close with ANYTHING and the anything dies. Tau, the masters of "Push the red button and they die before getting to you" tactic employed by our very own M1A1 Abrams crews. Orks can simply overwhelm space marines with sheer numbers if they can get in close. IG do the same from a distance. Marines are a require a grasp of strategy and forethought that I have not often witnessed. They are one of the most adapatable armies around, but if yolu don't kit them out properly, and then use what little forces you have wisely, you are wasting your time unless your opponent is even worse at the game than you (which happens to be my case.)