Educate me. Never used one, need one. Main uses will be cleaning vinyl fence, vinyl siding, concrete, brick.

Gas or electric? Around the house will have access to electric but might need an extension cord.....looks like some don't allow that. I do have a generator but it would be a pain to lug around.

Do any allow use of standing water or do all require a garden hose? One that could use standing water from a pond would be useful for cleaning concrete water troughs a couple of times a year.

Recommended brands/models welcome. Thanks