I've found this website very useful, particularly after filtering down to my geographical area and investment type. 

It depends on the specifics of your particular situation.

I worry that it will be hard to find good tenants because most families that need that much space either 1) already own a house, 2) can't afford such a large apartment or 3) can afford an apartment that large short term, but long term will end up inviting their extended family, etc. to live with them because they have so much space and can't make rent on their own.The only good potential type of tenant I can think of is a middle-class family that needs non-permanent housing -- e.g., professionals who are in the area for a year for work and want a large space to rent for that period.

While you should be particular, don't wait for the best deal.

I would still classify myself as a newbie in the real estate investing world, i have 3 rentals currently, but they all came from my military days as personal owned homes that i kept and turned into rentals, i had 7 rentals at one point, but i sold off the non-performing properties as soon as i could break even on them.

What in particular do you mean?

Based on my income + about 70k in savings from selling non-performing properties i have been debating a few ways of going...I have been keeping an eye on MLS listings since i still hold my real estate license for the past few months and Craigslist for cash deals, but i feel the prices are just terrible right now on your typical 3/2 rental properties...Option 1: Should i keep looking for 3/2, 4/2+ under 150k deals for rentals in hopes of something popping up?

Its tough to give a spot on answer as I don't know your credit profile, terms of the loan etc, but a 6% interest rate for a non owner occupied property may not be too expensive.

Is there any in particular you would recommend?

You could make yourself a voting member and make them a non voting member.