I recently purchased the 7 gallon X2 jacketed fermenter. My reasons for choosing it may be different from yours. I currently have 2) 27L and 1) 55L Fermzillas. I like certain parts of their design. I do like the collection chamber and I like the floating dip tube. These are features that the X2 has that do not seem available with the Brewtools.
I ordered the X2 Jacketed Fermenter and the 80 watt heating pad from MoreBeer. I ordered the SpikeAll-In-One PRV All-In One-PRV
and CIP arm from Spike. Tose two items cost the same as just the pressure fermenting kit from MoreBeer and take up less room. I ordered casters from Amazon for $30 rather than pay $80 from MoreBeer. I ordered the HopDropper from Brewers Hardware Hop Dropper
It uses a ball valve rather than a butterflay and allows the hops to drop very smoothly. I also ordered other various fittings from Brewers Hardware and Brew Hardware to set up the CIP system and connect the glycol ports to my glycol system. I ordered a carbonating stone fitting to go in the collection chamber from Amazon for $10 less than MoreBeer. At this point, I have roughly $1900.00 into the fermenter and accesories.
I received the last piece yesterday and I will connect the glycol system to the fermenter today. I do suggest using shut off disconnects for the glycol so you can easily move the fermenter around for cleaning. So far, the CIP arm works very well and I was able to clean, degrease and passivate the tank with no problems. I can let you know my experience using the fermenter after my first brew in it this weekend.