Help selecting utility plan

I need to select a new electricity plan and I'm terrible with this stuff. Especially after February's winter storm, I feel like getting some opinions here would do me good.

Does anyone have recommendations on cheap electricity plans? I will be living in 77019. My average kWh usage over a previous 12-month period living in Houston was 511 kWh, so I've been looking using the 500 kWh "estimated use" on sites like powertochoose.org and other similar sites.

I don't want to pay a lot for electricity if I don't have to and you redditors seem savvy with this stuff. Any suggestions? Thank you in advance.