I think it is really wrong to compare prices. Something that is expensive doesn't mean gain will be bigger than those with the lower prices. Consider a coin that is just worth 1$ that becomes two dollars after an increase and compare this with a coin that is worth 100$ and sold after a 50 dollar increase. Given that we have a 1000$ worth of both tokens which these two could have given us the most profit? Certainly the answer is the smaller valued coins because it is increased by a 100% while the other high valued coin only gives us a 50% increase. Which ever coin will give us the highest possibilty of increasing will be the one worth investing.