What CRM would you suggest for my business(es)...??

Long time reader, first time poster...

A bit about myself; I am a true offline warrior!!

In 2010, broke as a joke, I made an arrangement with a few local professional/legal services companies. I was a 1099 independent contractor, mining and buying lists, and HAMMERING the phone setting appointments, and making sure they closed so that I could get paid...

I quickly realized that the phone was key to acquiring (and closing) customers/clients/deals for local businesses, so I got a few phone sales guys and have now become a consultant in the industries that I am now very, very well seasoned. I've been introduced to other businesses that I hold equity in and have now made over $1.3M since I started this whole thing on a whim 5 years ago, and have helped others become much more wealthy...

The reason that I'm able to do all of this using old-school phone appointment setting and selling is because the industries that I consult for are big-ticket item/services...Real Estate, construction, law, business/commercial services...A lot of it is relationship based, you know...the who knows who, walks the walk, talks the talk, blah blah...This is great, because being behind a headset with google at your fingertips makes you a guru [or at least sound fairly knowledgable] about your sales topic...

Aaaaanyways....I FINALLY decided to convert my disastrous system of tracking 5 years of business into a new CRM, and I know that once I do this, my business is going to multiply, so I'd like your take(s) on what you might think is the best solution...

I'd like something with deep gmail integration. Some of the ones I've looked at, like Insightly and RelateIQ, claim to magically know who needs to be involved on what deals, and somehow pulls info from my gmail account to know about my business and how to organize it?? Does anyone have any experience with these two?

Then there are some CRM's that look to actually be plug-ins/templates for Gmail itself that turn your inbox into a CRM -- Anyone? I think Streak does this? It's very, very interesting as far as cultivating deals goes and getting to closing tables..

Real Estate deals (transactional) are a chunk of my business, and a lot of CRMs seem to have templates for them that are geared towards that business..Like Podio...Podio seems solid, does anyone have an experience here?

I'd like a CRM that can manage multiple businesses/endeavors...mostly the ability to set up a small business, and grant access to that business's CRM to certain people, while I am able to oversee all of the endeavors in one account...In essence, I want to have a master CRM that allows me to 'white label' sub-accounts (sub-crm?) and tailor each one to be it's own CRM...Is this a crazy request?

Easy webform creation...I want the ability to make custom landing pages for separate businesses and run their respective campaigns for them. So, the CRM will be taking in leads for completely different types of businesses, and handling them in completely different ways...(hence the sub-crm thing)..

DocuSign, DotLoop, or other e-signature integration would be nice...I eventually want to switch over to RingCentral or some service like that opposed to my landlines and cell phones too, so that'd also be nice..

I just came across HubSpot before posting this, and I'm very intrigued...Looks like its geared more towards online lead gen, which I'd like to get more heavily into myself...but seems pricey, no?!?!
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Capterra contacted me and was going to get back to me with solutions that would fit the bill...That was a bust as they suggested some ACT based CRM...I want some modern AND user friendly...Salesforce and Infusionsoft are too rough around the edges for my taste...

So, any entrepreneurs out there have any input? Am I being crazy and asking too much?

I realize that it will take weeks to customize the solution, so I want to make the decision right on the first take!!