Plus I really like his work and out of all the other GC's he has a really good reputation.

If it’s 1st position NPN then @Scott Carson is who I learned from and his training is legit.If your into 2nds then you will want to reach out to Martin Saenz as he has a great reputation as you probably know by his book.If you want to do owner financing, partials and some performing etc then Eddie speed has a lot of training as well.

Is this a reputable company? 

I am leaning towards them because of there reputation of being there when you really them.     

However if you are hiring several different Realtors, you run the risk of not only getting a bad reputation but potentially engaging in unethical business practices.

I agree with the several other posters who have suggested you find a reputable sponsor, build a relationship, and passively invest in commercial properties (which includes large multi-family).

(Shrug) i value my tenants and good reputation.

My question: I have a real estate agent who I like very much, experienced, reputable and quite successful with single family BUT little multi family experience.

Lending home you can check withLima one Visio  these are all real HML portfolio lenders and I am sure there are reputable ones where you live as well

Not only is it a waste of time, but it destroys your reputation.