The grade of tenant you will attract is a function of the area and the property itself.

Unfortunately, it also attracts its share of sophisticated scammers with fake websites, spoofed email addresses, and professional sounding names.

Because I’m new to this I tend to favor the duplex in my mind because it’s been nicely renovated and it’s more attractive, but that’s probably just the newbie in me talking.

The pure study of the law is very attractive to me but there are too few legal scholars these days. 

Combine that with my 10 month old son and my fiancée, his stay at home mom, and you can see why such a powerful investment vehicle was so attractive to me.From the research that I’ve done so far, I’m very interested in the BRRRR method.

I found some real estate agents that were sending me deals I wasn’t attracted to without taking the time to fully understand my financing situation.

I have thought a lot about doing a BRRRR, and am in the middle of David Greene's book right now which makes it even more attractive.

Would investing in energy efficient upgrades attract higher quality tenants and can those upgrades justify a higher rent?

Most of these are attractive because of price and location (B/C Class).

That'd probabaly make for a more attractive rental and you have direct control of all the factors, can check it between tenants, etc.