Crossway is making the online version of the ESV Study Bible available for free for the month of March. You can register here. Continual access to the online version comes with the purchase of a hard copy. This offer thought allows others to give the material a try. The online version is great for access and ease of use.
I am not the right person to assess the value of the study Bible since I wrote the notes for the Pastoral Epistles, but I have greatly appreciated the work of others in this study Bible. I am also impressed with the wealth of information available in all the extra articles.
So, I encourage you to take advantage of this free offer and see how useful it is to you.