LED Strip

I have been looking at the 30 leds per metre strips.
Firstly, it looks like they have dotted lines between each led. Can they be separated to individual leds ?
There are currently only two options available. One is a (DotStar/APA102/SK9822 compatible) @ £8.40.
The other is a (NeoPixel/WS2812/SK6812 compatible) @ £7.50.

I have a couple of ideas. One involves single leds and the other has 10+ in a semi-circle. Would one of these be more suitable than the other for these ideas ?
Thanks in advance