The losi box has not started a new engine so I don't know how wel she does a new one.
Its up to you really hellsavage.... I used the losi box to break in my speed, which most know is a pretty tough assignment. I did have a bit of trouble the first few times with the engine locking at tdc but do admit to being lazy and not heating the block, but most suggest that regardless of which starter box your using. As long as you have aligned the wheel properly and show a little patience it'll be fine.
A friend who uses the magic box burnt both his starter motors out in his box trying to break his speed in!