heat n bond or steam a seam?

Good morning everyone

Here I am again with a question.

I will be embarking on an applique project to make a baby quilt for a
friend of mine (as soon as she tells me she's pregnant!). I have found
the perfect quilt patten for her (teddy's playhouse) but it involves
applique (Lots and lots and lots). So this gives you an idea of how
special this friend is to me, as some of you may remember me saying
that I really REALLY don't like applique!.

So here's my question; which is better/which shoul I use, heat n bond
or steam a seam???
Preferences? Why?

It makes no difference to me; I will have to buy whichever online so
hit me with the recommendations!

Thanks

Claudia