Which verbal prep? 3rd GMAT attempt didn't go so well

Hi everyone,

I just took my GMAT again today and ended up with 640 (Q48, V30, IR7). The first exam I took was back in March 2018 and scored 620 (Q46,V30,IR6). I studied for another two months and didn't see any improvement on verbal. I am waiting to get my ESR to see where my weakness is, but my weakness has always been SC and I've been focusing on studying verbal. I am not super happy, as I know I am capable of scoring upper 600s to low 700s based on my practice exams.

Quant:
Everything went well. I was very conscious of my timing and had a few questions that I knew I didn't know the answers so I made educated guesses and moved on to focus on questions that I can get right. In return, I was able to improve my Quant from Q46 to Q48. This aligns with Q49 that I've been getting on practice exams so I am not too concerned.

Took a break and drank water and had a protein bar in between.

Verbal:
I was confident going into Verbal knowing that I did fairly well with Quant. My only hope was to stay focused throughout the exam and at least aim for V34-V35 to hit ~680. I got two freaking long RC passages that ate up my time and I was losing focus as they were unexpected. My timing was also off as I had only 15 mins left with 10 questions to go, including another RC. I ended up finishing the exam on time, but I had to definitely skim through last RC. My weakness has always been SC and without ESR, I don't know exactly how I performed this time around but I did I messed up on RC, rather than SC this time.

Took a break and drank water

IR/AWA:
Went fine. I've always done well on AWA so I didn't even focus on AWA and I didn't study for IR and ended with a 7.

I am not looking to score any 700+ scores, but at least close to 680 and 700 for my part-time programs at Haas, Booth, or Kellogg. I have engaged in multiple school events in the past year with these schools. I have strong extracurricular activities from both undergrad (at Cal) and after graduation. My work experiences are strong with a few promotions at FAANG.

My only concern is my GPA (3.32 in Econ) and GMAT. I don't think I can even get into any part-time programs: Haas, Booth, or Kellogg with the given score.

At this point, I am looking for 680 (+40pts increase) with my focus on Verbal. I have used both MGMAT and OG. I am interested in learning more about Veritas, EGMAT, or Empower. Which one would be ideal for someone looking to improve V30 to V35? I know I am capable of scoring V35, as I have scored V36-V38 multiple times on GMAC Practice Exams. My plan is to retake in 3-4 weeks.

Thanks