Make sure you check out all that this site has to offer.Alerts can be really helpful too: http://www.biggerpockets.com/alertsThe site has quite a few tools that can be helpful for new members.

Google is also a wonderful tool.

I've invested in multiple softwares, tools & market research to help me locate property and owner info (such as Propstream, Batchleads, etc) but it's not providing the returns I know I could be getting if I was directly tapped into the MLS.

I also realize that our business is one of reputation so being diplomatic and asking nicely and respectfully goes a long way when I am trying to do things for my clients that might be considered an inconvenience to sellers or other agents.Communication is also a huge part of a good agent’s tool belt.

Because of that and that we would like to store our tools there when we move in -- we would like to limit access -- though we are okay with the seasonal tires.Unit 1 is the only unit whose circuit breaker is in the basement and therefore require access by law.

First lien HELOCs are the most powerful investing tool I know of.I think I'd look for another bank or institution that offers the first lien HELOC and compare costs, but you are absolutely onto the right product so in general, pursue that with determination.And to avoid assumption, check out velocity banking if you haven't already.

If you can provide that knowledge to guide them or are looking for more basic Floorplan drawings, etc then it could be great tool for you.

As a real estate investor, what tools or items are a must to have on you when visiting your current or potential investment properties?

I'd recommend using the networking tools here on BP! 

You’ll find plenty of friendly, knowledgeable people willing to help respond to your questionsThe site has quite a few tools that can be helpful for new members.