You should really buy whatever strikes your fancy, there's really nothing 'bad' any more on the table in AoS. There are models that are 'better', but everything has their place on the field.
You could probably ignore a lot of the former 'core' models - most of them get bonuses for being fielded in bulk because in WHF you needed a base amount of core troops as a 25% ratio of your army total, so most people who played WHF have a crapton of core. If you're new, you can kind of ignore them in favor of more potent troops.
DE actually have crossbowmen as core, though, and they are rather good, I believe. If you want a pile of 20 crossbow guys, go for them - but they aren't necessary, and frankly probably not ideal.
Personally, I'd go for whatever you feel is aesthetically pleasing. I'm partial to Witche Elves and Sisters of Slaughter, the Bloodwrack Medusa with or without the Shrine, the Hydra, the Shades for shooting, Bolt Throwers (siege anything is solid), Doomfire Warlocks (evil wizard cavalry is always choice, and they look cool), an Assassin at least (thematic, and the model is great), and a few caster Heroes and combat Heroes (all of which have wonderful models).
|