Baby & I have tried Japanese Porridge beanstalk, 和光堂,
For Beanstalk, it tastes like rice and quite good.
If you purchase it in Japanese Supermarket (sometimes mannings also got this brand) its around $30 per box
If you purchase it in internet (like re-on), it costs around $21 per box.
And my baby likes it very much even though I use water to mix it.