I decided on the x2 for two reasons - The Medtronic has supply issues with the sensors due to manufacturing delays (Mother Nature strikes again!) and I already have a Dexcom DME. Depending on which pump you are migrating from Tandem has several “special” offers. They are actually super easy to work with - easier than Dexcom IMHO, and I felt that Dexcom was very supportive.
In the last month I have had exactly two 5 minute CGM dropouts. That’s actually less than I had when I was using a Dexcom G5 receiver. For me the Dexcom adhesive works very well, but YDMV. I do use SkinTac prior to applying the sensor, and generally I get 3.5 to 5 weeks per sensor when I supplement the original Dexcom sensor adhesive with a GrifGrips patch several weeks in.
Fingersticks are required for the CGM every 12 hours. Personally I fingerstick 4-5 times a day, not because I have to but because I am OCD about my BGs and I donate the info to Tidepool. I usually bolus straight from the CGM value, but I always have the opportunity to override the pump suggested bolus value prior to actually bolusing.
I have also read that many people here have had numerous occlusion alarms - I have had none.
BTW, my CDE was just told by her Tandem rep that PLGS was coming Q1/2018, not the anticipated Q2/2018. Woo-hoo!
You are welcome to PM me if you want any additional UX comments. Best of luck in your decision. Whichever way you go you are getting a great pump!