Had Va for a while, but only recently bought Orion. Love the packs for the ship commands, they really make the game flow better. Combined with my EDTracker Pro, and the game changes even more. My biggest gripe is that they don't read your control binds and use them, rather forcing you to change either your control set up or edit the packs. I believe there is a free pack called Ocellus which is being designed by a forum member I think, it uses a plugin similar to EDDI, but also has keybind reading built in. Yet to play with it, but it looks good.
Not had any issues with the HCS packs or VA failing (other than not knowing my voice, but thats a windows thing) requesting docking without looking at the panels or pressing a key is a pleasure.
In short the HCS packs add some content that you will not get anywhere else, but for basic ship control you don't need them as there are other free packs out there that do that. However, if you like the voices supplied with the packs you can set them up differently that the way you get them. For instance, every time I say "Galaxy Map" I really hate the smug reply of "Stellar Cartography", smarty pants Kirk always correcting me... So I changed it.