I encourage the use of ArmSCII based fonts. That's the reason why I link only to font packs that comply with that standard. All of the following are dual fonts, i.e., with ALT+SHIFT you have on the same font the set of Latin and Armenian letters.
All of the font packs are supposed to be in the public domain given the way I've got them. If it happens that I'm wrong, just mail me and allow 72 hs. to drop it from my list.
You have all you need with the first two lines. The rest are very similar (except 'Sovorakan'), and many of them don't have great quality (kerning, shape, etc.).