Perhaps you can't decide which processor to buy, you can make a decision by looking at the Intel Core i5-8260U GeekBench 5 score single and multi core test and understand is it a good processor or a bad one to buy, how powerful is this CPU. Here is all information from GeekBench 5 benchmark. A careful review of all the specifications, to make it easier to read, is made by the table. After looking at the data this test and video, you already be able to figure out do you need to buy Intel Core i5-8260U or not.
However, it should be understood that all the data that you have looked at here do not mean that you should be guided entirely by them and trust a simple comparison of these figures. Be sure to watch the video tests and read the opinion of of people who bought Intel Core i5-8260U before deciding buy this processor or not.