Comparing Katalon Studio versus TestingWhiz and TestComplete versus Ranorex

I work in a small firm whose product is a relatively simple web-based software. For the last several years we have used Selenium IDE and it's record-and-play functionality. It has delivered 98% of what we need. However, now that Selenium IDE will no longer be working several months from now, we must find an alternative.

After some research, we cannot use the free Selenium Webdriver because our testing team does not have adequate coding skills. And we cannot use the proprietary HP QTP because it it is too expensive.

After reviewing a dozen or so applications, we have the possibilities down to the following. - The free Katalon Studio and TestingWhiz are both highly regarded and have very similar sets of features. - Likewise, the fee-based TestComplete versus Ranorex Studio are also highly regarded and have very similar sets of features.

We have carefully compared the features of these four and will probably have to run a series of trials on them, but I thought the following might be worth asking. What are the most important differences between Katalon Studio and TestingWhiz, and between TestComplete versus Ranorex Studio?

Thanks.