The venerable WS2812B is among the most used and well-supported addressable RGB strip LED. 60 LEDs per meter on white PCB, IP65 water resistant.
WS2812B-based LED strips are a favourite among hackers. They are well supported, well proven, and a great performer.
These are sold by the meter
These are sold by the meter! You may or may not get a power connector pre-soldered to the end of your strip. The only way to be sure is to order a full spool (5M length). A set of 3-wire connectors may be a good idea.
Note: Photos & video shot at 1/4 maximum brightness for best color rendition