I really like my tslim pump, though as it's my first I can't compare it to any other. It is small & light. The touch screen is good ,except in the brightest sunlight. I like the fact that it is rechargeable - some people don't.
My big problem was nasty overnight hypos which was why I self funded the Dexcom G4 a few years ago. The G6 is very reliable and needs no, or at least only occasional, calibrations.
When I first got the pump it didn't connect to the Dexcom, but having the CGM was extremely handy anyway, especially in getting basals set up. A Libre would be similarly useful.
The Dexcom is expensive, but the way I look at it, the fact that we now have Basal IQ on the pump ( & in a few months, Control IQ), means I am getting more value for my money from the Dexcom.