I would recommend this general approach as well. Any of the full sized ones with hepa, carbon, and dual sensors should be similar. I would buy whichever one you can get for the best price, as the prices seem to be all over the place.

I got the AM90 for $154, and while being able to connect to it from my phone is nice, I wouldn’t hesitate to buy a similar model without that feature.

Furthermore, knives can be so weirdly personal that trying them in a store may not tell you the full story. I have one knife that I more or less use for everything, and I never would have guessed it would be the one for me, but it’s14 years old, I’ve sugrued missing chunks of handle, and if something bad happened to it I would replace it with the same one.

I’ve had two, both chipped and tipped within a few years. I think I’m too rough on my knives for them to be a good fit for me. They still work well, but I rarely pick them up because I’m scared I’ll damage them further.

The Patagonia Black Hole Cubes are very high quality, and their warranty is good as well.

They aren’t packing cubes exactly, but I find them helpful for packing all the smaller things. They come in three sizes, the largest will hold 2-3 pairs of shoes.

I bought one bag from them in 2006, and several laptop, phone, and iPad cases over the course of a few years after that. I still have the bag, it’s in great shape, but I don’t use it much anymore mostly because I prefer other bags I’ve bought since.

As everyone has said, Teflon isn’t bifl, but these are quite good, well priced, and will last a few years if treated well.