Long time Android user. The two EFBs I would recommend are iFlyEFB and DroidEFB. I've used both over time for IFR flying. Not as feature-laden as Foreflight, but more than good enough for IFR. Both integrate with your avionics via WiFi. (I get ADS-B weather on my Android tablet from my NGT-9000 transponder.)
As far as Android tablets go, just ensure you get one with GPS capability. Most will have it, but there are notable exceptions, like the Google Pixel tablet. You will also want to decide on a form factor/size and screen resolution. I've owned a series of different Samsung tablets, and they seem to work well, although I don't like the Samsung bloatware which I have to disable or in some cases delete. Low-end Android tablets all have low resolution screens, which may or may not be ideal for and EFB usage. Get a tablet with 300+ ppi screen resolution.
FYI, I always run my EFB tablet from a panel-installed USB charger. Your EFB is too critical to risk battery depletion during IFR flight. If you don't have an on-board charger, connect it to a large power bank in flight.