Well, both Bitcoin and ethereum are a good coin and we don't have to convert between the two because both can change and the price may also change and we can maybe gain on it even if we simply holding it. The is really an amazing coin that can change much life and we only need to wait for it to rise soon.
both of these coins are indeed the best coins in crypto so there is no need to question who is the best. both of them have their respective advantages and disadvantages so we don't know for sure which is the best.
both of these coins have a big influence on other coins so the most important thing is that they are still in the market so that crypto will stay alive.