I tried this yippie noodles when ban was imposed on maggi.
when I made these noodles it was really bad in taste with very bad masala in it.
yippie noodles masala contains some veggies like peas, carrot etc but they dont taste good as they are not fresh.
they add preservatives in their masala to keep the veggies taste like fresh but unfortunately they could not make this experiment a success.
in the advertisement they show that this noodles is not sticky but when I kept it for 15 minutes it just got tangled with one noodle in another and became sticky.
so my opinion is that there is no such substitute in noodles for maggi. just go for maggi only.