I will only comment on my experiences with Estes altimeters in LPR rockets, qualified with documented results. We have over two dozen small rockets, some with static ports, some without. I use these altimeters to adjust the Cd in Thrustcurve, making my motor delay estimates more accurate. After about three flights with good data, I will adjust the Cd for that rocket to match the reading I get with the estimated altitude (in Thrustcurve) for the motor I flew. Once that adjustment is done, almost all readings I get match up pretty well with the simmed altitude in Thrustcurve, regardless of the motor I fly, and my motor deployments are within a second of apogee. All of these flights are with the altimeter attached to a loop at the nosecone, and the little retainer is taped down with some electrical tape covering the top of the altimeter, but leaving the switch and display visible. I just don't trust the clip by itself. I have broken a few with bad landings, and had the tab break off, before I started adding the tape, but if it is set correctly before flight, and has a good battery, you can usually expect good results.
This has been working for me for about five years, and hundreds of LPR flights.