The top picture, the ETA has jewels in the movement, the Ronda doesn't. Ronda is usually found in low end gens. There is a lot of interchangeability in Quartz movements, guides are published online. The ETA is better, but as Mike says, probably go with a cheap movement and replace it if necessary down the line, all else being equal. Plenty of five Dollar beach watch purchases seem to keep ticking away year after year anyway. Even I have successfully changed out Quartz movements, so if I can anyone can.