Both are dependable workhorses. In terms of pricing of movement, ETA was more expensive. Having said that, I have had watches from brands like Oris that uses Selitta, with no problems whatoever. There are 3 grades of ETA movement eg Tudor and Omega used to use the top-grade (prior to using in-house movements), Tag Heuer and Ball used the medium-grade, and micro-brands use the basic, unmodified entry-grade (some like Steinhart provides value-for-monies by giving the medium-grade ETA). Both ETA and Selitta are good movements, in fact I dare say that Miyota is just as good, other than the snob factor.
