I'd be curious to see a review of the new BrewBuilt tanks from someone without a massive conflict of interest.
My advice - look at the SS Brewtech Unitank. I cross-shopped the Spike offerings against SS Brewtech and Brewbuilt and came away with the following:
1. Once you account for the cost of heating and cooling kits, jackets, and various fittings needed to do pressure fementation and closed transfers, the costs of the SS Brewtech Unitank and Spike CF5 are not different enough to influence my purchasing decision. Spike's introductory cost is attractive but their accessories add up. SS Brewtech had a 15% off cyber Monday sale that sealed the deal for me.
2. The lid clamp on the CF5 is not as elegant a solution as the 6" TC on the SS Brewtech. It does however seem nice to be able to completely remove the lid if you don't want to CIP.
3. The Spike CF5 and Brewbuilt unitanks do not come with a means to shut in the tank - a requirement for either closed pressure transfers or spunding. You need to buy an additional ball valve and rig it up to the blowoff port or remove the blowoff, exposing the headspace to oxygen, and attach a sounding valve. Spike's gas manifold provides a PRV and in principle you could put a ball lock spunding valve on it - an OK solution. But the SS Brewtech solution is better - you get a built-in PRV and a place to add a spunding valve and there is a built in ball lock valve to shut in the tank. No need to swap fittings during fermentation and there is truly zero oxygen ingress.
4. If you plan to spund or ferment under pressure, you will need to find a way to add a PRV and a spunding valve. Both the spike and brew built products have only a 3" TC port and a 1.5 TC port on the lid. If you want to control temperature with the brew built tank, the pressure kit uses up the 3" but gives you an additional 1.5" TC port which needs to be used for the 'coolstix'. Then the 1.5 TC port will require a TC T-fitting, a ball valve, and a PRV. Add up the cost of all of the extra fittings before you make your purchase.
5. The BrewBuilt coolstix don't have much surface area. I'm not confident that I could cold crash in my 110F garage with that setup.
6. I'm not sure how I feel about the floating dip tube solution in the BrewBuilt tank. I would be interested to know if people find it a better solution than the rotating racking arms, which can be a bit of a pain and prone to clogging with lots of dry hops. I guess that there's no rational reason to dislike the idea of silicone tubing on the floating dip tube when all of the gaskets on these conicals are silicone.
7. Personally I don't care for Spike's kind of aggressive/macho image and branding. My .02 and I'm sure many would disagree. I liked their older brand materials more than the new stuff.
The only issue that I've found with the SS Brewtech unitank is that the 7 gal model is very front-heavy and can tip over if it's on casters. I wish that they would offer an extended bracing shelf similar to Spike or a set of casters that locked in the forward position. You can just put the whole fermenter on a heavy duty plant dolly though - problem solved for $20, and it catches spills.
I think we answered that well enough and he seems safely on the right track. 
