Rather take that 40 to 50K and buy a couple of $90 to 120k houses with $1,000+ rents or better with a reputable turnkey company in B areas.  

Is this a reputable company and we should expect them to honor the warranty if anything needs to be done in the future ?

Anyone know a reputable real estate agent in West New York/Union City New Jersey?

To install them, you do drill right through the asphalt shingles, but any reputable installer also installs high quality metal flashing over every penetration to prevent leaking.

A reputable realtor can find you an independent contractor, at least I did many times, charging a fee, but at least you will be getting an honest opinion.

But before you do that, build a strong reputation and trust... because you will not succeed without it.  

We have a reputation as attentive landlords and want to keep it.

Here's why:Aluminum windows last the longest.Tempered or laminated glass are both stronger than plain annealed glass (laminated is just a tick more energy efficient).MUCH cheaper than good quality custom sized impact windows both in initial cost and replacement cost (I doubt that you will find exact fit factory replacements)Covering them with a permanent, crystal clear, UV filtering shutter will prolong the life of the window, eliminate water leaks and window maintenance.Permanent shutters don't break so there's no replacement cost and offer continuous protection whether you're home or away.Increases home resale valueIf you simply want to flip the place, go to a cheap PVC impact window supplier and get a list of standard sizes and modify your openings to fit.

Hey South Bend, I'm looking to invest in the area and was wondering if anyone could recommend some reputable professionals for me. 

The hard part is know who are the sharks and who are the reputable real estate investors.