Perhaps you can't decide which CPU to buy, you can make a choice by looking at the Intel Core i5-8279U Cinebench r23 score multi and single core test and understand how powerful is this processor, is it a good CPU or a bad one to buy. Here is useful information from Cinebench r23 benchmark. A thorough review of all the specifications, to make it easier to read, is summarized in the table. After reading the results this test and video, you already be able to figure out do you need to buy Intel Core i5-8279U or not.
Although it should be realized that all the data in the article above do not mean that taking them into account you should completely trust a simple quantitative comparison. Better to watch benchmarks video and read the reviews of real owners of Intel Core i5-8279U before making a selection buy this processor or not.