To save you some trouble, Rigger 5.0 offers about five different anthrodrones and mentions a few extra features for them (all their limbs are drone cyberlimbs, and can be modified as such, anthrodrones have 8 + (1/2) BOD condition monitor boxes like metahumans, they can use metahuman equipment) as well as mods (drone-specific mods, and vehicle mods that drones can also get). Extra stuff for riggers in general too, like the Target Device action to increase your offensive dice pools even more.
The anthrodrones are the Criado Juan (a dirt-cheap, 8000 nuyen anthrodrone with poor stats), the Horizon Little Buddy (an even cheaper drone at 2000, the size of a five year old), the MCT Kenchiku-Kikai (20,000 nuyen; the size of an ork, used for industrial work and comes with both arms at 8 STR), the NeoNET Juggernaut (too rare to start with, but it's a heavily armored riot-control drone that comes with two weapon mounts for 100,000), there's the hard-to-pronounce "SAEDER-KRUPP DIREKTIONSSEKRETAR" who's name I just copy-pasted (40,000 nuyen, but it's buyable in chargen and has some solid stats like the highest Speed of all anthrdrones), and the Shiawase I-Doll (20,000; comes with Realistic Features upgrade to look more human, but not enough to fool anyone without more upgrades or full-body clothing).
A solid variety of choices.