It can be a matter of preference. I prefer to mount the handle on the opposite side form the main door handle. The reason I do this is when I open the screen door and you have bags in your hand. You can hold the screen door with your body and open the entry door with your hand and not have to reach across the opening. to do so. I just find it more comfortable to do it this way

fairfieldcircle,
With my back up against the jamb, I extend one arm to the right and the other to the left - something like a book. The front cover is the inside door (my right arm) and the storm door is the back cover (my left arm). This is a door installers' rule of thumb.
Although occasionally there is a real reason why the above would not work, but most of the time its' best.
Although porches are my first love, I've installed windows and doors for thirty years to pay the bills and have seen em all.
Keep both doors' hinges on the same side of the jamb and be careful to mount the storm door handle at a height where it won't interfear with the inside doors' handle.

Good Luck.

The PorchGuy

Here is a link that might be useful: My Album

We have switched about 1,000 storm doors to hinge to hinge configuration. Opposite handles are a nuisance.

Michael

Thanks so much for all the advice. I will see what works the best, then, in our situation.

p.s. PorchGuy, I love the slide show of your work. So many wonderful porches to dream about!

I want to build an small(uncovered) porch onto the front of our little ranch house and you have given me lots of ideas (and more questions to ask!). I think I'll start a thread about my project on the Patio Deck forum... hope to see you over there!