It is unfortunate that things are tough for them and do really hope 2021 brings a better year for them and everyone. I literally check the Stratologger CF site every single day and there has been no inventory for 5 months now. I used my last one back in November and also wish I could get my hands on more of them. I am using Ravens and MW RRC2L's, but those are getting tough to come by as well. I placed an order for 5 RRC2Ls over a month ago with MW and the order is still posted as "processing". In fact, I have 3 orders in with MW right now and none of them have been fulfilled. I am hoping it is just because of the holiday surge. The RRC2L is about as close to a StratologgerCF that I have found, but it does lack some of the functionality of the Strat, so not an apples-to-apples replacement. The Raven 4 is easy to get and it is an amazing altimeter with a lot of functionality and a bit of a funky mounting/wiring design that allows you to be creative in how you put them in your rocket, but at 3 times the cost of a Strat or RRC2L, it is hard to use them in every project. Using a Raven in a big rocket that costs $500+ is easy to justify, but putting a $160 altimeter in a $100 rocket really stretches a budget.