Is buying a pair of long jumping shoes made for long jumping worth it? Or is it better to buy the lightest sprinting spike?

Hmm I jump about 20 ft or so every time, I use my 100m sprint spikes, I don't use longjump shoes, if you ask me it's a waste of time.

if ur doing tj as well then its better to get some tj spikes. but Lf and sprint spikes arent all that different. more material here, less there, different colours. big deal!!
until u get a sponsor...stick wiht the 100ms