I dont think either one of them are compat with the SSCs we use.
Our flex strips from Ray: You are not allowed to view links.
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use the TM1809 ic I think the others that are compat use the TM1804 ic. Check the wiki for compat strings.
Myk
I think he is aware they are different, but the ones he picked are much cheaper, but you will lose the individual pixel control. He may want to just have the whole string as one color though. I will warn you about that though, I put up the ones you can use with the smart string controllers, and having all of them on at once just makes it look like a solid line of color, so we usually ended up using every third or fourth pixel to make them look more like individual lights. Getting some that you can only control the string may be fine with you, but something to think about. Most strings of lights are 6 to 12 inches apart, these end up being 1 inch apart at 30 LEDs per meter.
Plus a lot of my sequences I did alternating colors, like a Red-Green alternating. You can't do that with the cheaper strips.
As for problems, I have 2 strands that I put around corners where I think I got something lose on them. 1 of the strand works all the way through, but it will occasionally get stuck and have to be power cycled and it starts working again. The other strand I lost the last 5 or 6 pixels on it, the rest of it works fine but those last ones just won't come on. So just be careful with bending them too far at any time.