A great way to find a course that meets your needs is to check out the course reviews as these are verified to come from actual students who have taken the courses. The course reviews can be accessed from the GMAT courses menu above and link is here
https://reviews.beatthegmat.com/
This is a better plan than asking in a posting since you get lots of detailed reviews from students who have had the courses. No doubt most of them say "the course I took was great" but read them for the details...why does the person say the course was great and does this match what you need out of a course?
Let me say one more thing on the subject, you say you just want a verbal course, and many of my tutoring students will say that they don't need any help on the quantitative -- but since companies will either not offer a verbal only course or the price will probably be very close to the same for the whole course you might as well get the quantitative books and access to the quant sessions.
Also, do not forget to check out the discounts through Beat the GMAT, also available at the GMAT Courses menu above and at this link
https://www.beatthegmat.com/mba/gmat-course-discounts.
All of the main companies have discounts there, for example, the Veritas full 42-hour online course including all books is about $750 dollars with the discount code from Beat the GMAT. (That reminds me, I am starting a full course on December 7th Tuesdays and Thursdays from 7PM to 10PM).
So -- loads of info on this site to help you make a choice!
Good luck!