studmuffin:

welcome to the forums!

but elite honor gaurds are very useful, I have learned from the computer to just keep them being made constantly and they build slowly so you money will come back faster and whe you make other units your god, alos elite honor guards own ODST, and they are good for hit and run tatics, grab about 10 and send them in backa  base and attack a building, as soon as you se enemy units cloak them and when they go away attack agin and repeat.

 and ghosts are not bad aginst air untis but they need the tech 2 upgrade and by them yo can have vampires so -=(

Yes, EGHs trump ODST, and for two reasons: EGHs have shielding and stealth (which reduces damage from attacks as well), and for every member of an ODST squad that dies, the net damage that single squad unit can deal is decreased.  The EGHs, alternatively, deal the same amount of damage, no matter how low their health becomes.

Exactly, Vampires are better.  But as I've found so far, Vampires should really just be used against UNSC players.  There are a few key reasons why I don't use them against Covenant: they have no force-shielding, they are weak against infantry and vehicles, and the Covenant have absolutely no powerful air units that I really don't need to worry about, such as Hawks and Vultures.  I would only use them, and in small numbers, if I were up against a PoR, fully upgraded to flight.

Besides, I find the Ghosts' Boosted Ram ability much more useful against infantry than Vampires could be.  And as both are equally as weak against vehicles (which I leave my PoR and EGHs, who are suprisingly fair against vehicles for infantry) .