Which one would you buy Indoor Camera E220 or C220? And why?
E220 has a slightly wider field of view.
Do you have any specific intentions for the camera, or just general security?
requirements
1 works with HomeBase 3 without SD card
2 detect baby crying ideally
3 better in general
Works good for me.
I have both, E220 seems to work better but with firmware updates it may catch up.
Probably the E220
Multi camera streaming, when???
I own 2 brand new E220’s connected to a brand new homebase 3 and it’s very buggy and doesn’t work reliably. I work in IT and have a networking background. I’m seeing a lot of issues I’m not happy with.
both work with base3, but I think c220 works better. E220 is more like an add-on, it connects to WiFi independently, not via base3.
This 
. I have e220 and wish it would directly connect to homebase3 directly. However e220 supports homekit natively if that ever becomes a need.
E220 so far but it’s all I have. I like the sdcard support
Have you considered the S350 Dual cam?
E220 indoor pan and tilt got a recent update so it can connect and record to home base 3
E220 gets my vote. Some people have had issues but I haven’t yet 
on wood
Unless eufy change their policy of bricking their products with bad updates and refusing to support them when they do, neither, nor any other eufy product.
I can only talk about my experience with the c220 but haven’t had any issues, i have used it both solo without the home base and connected with the home base