Is Silicone Meal Prep Bag Better Than Ziploc Review

I am trying to reduce my use of single use plastics and I am looking at buying some silicone meal prep bags like Stasher. They are quite expensive compared to a box of Ziploc bags but they are reusable and supposed to be better for the environment.

I am wondering if they are actually good for meal prep. Can you freeze them and microwave them without any issues? I also worry about them being hard to clean especially if I have something oily or saucy inside. I am in the UK and I have seen them for sale at Waitrose.

Has anyone here made the switch to silicone bags? I would love to hear a real world review of how they hold up over time. Are they worth the investment or should I just stick to my glass containers? I want to be more eco friendly but I also need something that works!