the one I've found best for solo play is the kuva hind. large magazine size and relative dominance of Slash damage + high status and high (enough) crit chance means no need to burn a slot on hunter munitions, and taking innate toxin damage means using primed cryo gives viral with no need for a second mod.

this allows for a very strong anti-grineer weapon, which turns into am absolute murder machine when I encounter a tough target that justifies using Garuda's #4. against lvl 180 SP exo gokstad officers it only takes a couple of shots to inflict a bleed effect strong enough to kill them.

honourable mention is kuva quartakk, which is even more powerful when aimed but feels just a little clunky in its hip fire auto mode, not to mention not benefiting from galvanised scope while not zoomed.