Without using any adapters, I have very successfully used many 510-thread delivery devices on my eGo batteries, including (but not limited to) CCV 1.7Ω SC Resurrector Cartomizers, Boge 2Ω SC Cartos, a SmokTech 1.7Ω SC eGo Cone Carto, a Smok Tech 510 2Ω Atomizer, a Vision ViVi Nova 1.8Ω Tank Atomizer (never leaked a drop), and Vision V2 and V3 (rebuildable) 1.8Ω Clearomizers (never a leak here, either).
Using various adapters, your choices are virtually endless. With the standard eGo batteries, you'll probably want to go with a low resistance carto, tank, or atty, because of the lower voltage that device provides. With the Twist, you can use pretty much anything you want, provided it's 510, or you have purchased the proper adapters for the various other threadings out there. I have used 510-eGo, 510-KR808D-1, 510-RN4081, 510-510 (riser).
Just remember, you'll probably want to vape at somewhere between 6 and 8 watts of power if you're just starting out (so you don't pop a coil), so you'll need to decide on what the resistance needs to be for the carto/tank/atty you purchase for your standard eGo battery. You can use the online calculator here by simply filling in your battery's voltage and desired wattage...click "calculate" and you will be provided with the resistance in ohms for the device you'll need to buy. I prefer 1.7-2Ω delivery devices on my 3.7v batteries, so that puts me at 6.8-8 watts of power.