If you like the DAG - invest in Byteball! You get them even for free if you have bitcoins available.

IOTA is a scam operated from this guy:  come-from-beyond.okis.ru

Read more articles about IOTA before you consider to invest in it:
https://bitcointalk.org/index.php?topic=1934476.0
https://bitcointalk.org/index.php?topic=1602788.0
https://bitcointalk.org/index.php?topic=1468465.0
https://bitcointalk.org/index.php?topic=1605193