A lot seems to depend on the choice of soil, where its purchased and so on. There are usually ways to deal with bug issues, especially if caught right away. From my knowledge however, every grow, no matter the medium runs some risk of bug infestation. Just continue researching on this topic, and make a decision based on what you feel is best for you.
Also, WELCOME to RIU. You will find a lot of great information on here, but also some not so great information. The most important thing is to continue to learn and do individual research to find what works best for you in your garden. Make use of the forums search bar, as this is a great way to find threads that are posted on topics and questions you may have. Furthermore, don't take information as being a 100% valid without verification, I prefer members who have photos, videos, etc to back there claims, but even then every garden and grower are different.
Finally, please know that "Well-Known Member" doesn't necessarily equal "Great/Knowledgable Grower" as many new members tend to make this assumption. I am a prime example of a new grower, who has received this status simply because of my activity on the forum!
Best of lucky with all your grows and again welcome to the RIU community!