Review Time:
I was lucky enough to get a review copy from the OP. The Review copy contains 4 links and delivery time was 4 days which is good. All 4 links are live and Do-Follow with correct anchor text. The service proved to be very nice. I can't say about the SERP movement for now because it's been once few hours OP has sent me the report. Below are the detailed reviews of different components of the service.
Domain & Metrics:
Site 1: TF= 19 CF= 37, DA= 29 PA=40, RD= 533
Site 2: TF= 19 CF= 38, DA= 29 PA=41, RD= 627
Site 3: TF= 14 CF= 26, DA= 25 PA=1, RD= 115
Site 4: RF= 15 CF= 36, DA= 29 PA=40, RD= 435
The metrics were good and as advertised and RD is as promised. the only drawback I consider is the quality of the domain, the domains were spammed a little with supplement, medicine and Japanese anchor and backlink (checked with openlinkprofiler, majestic and moz). but I confirmed that all 4 Domains are indexed in Google.
Regarding the design of the Sites, it was decent, elegant and sober looking. The sites have a contact page and term of services page.OP has used great themes and each content shows in full on the homepage. So, you can be sure the juice on the homepage will pass to the links.
The articles were posted on 22th of May and aren't indexed in google yet. so I'll wait for the posts to be indexed in Google naturally.
Content & Article:
The articles are spun but of high quality. The content is easy to read and makes sense. It passes the Copyscape. (checked). all the articles contains a picture related to my niche The Content length on both sides was 400-450 words,
SERP Movements:
I can't say about the SERP movement yet, Order was delivered a few hours back and the posts aren't indexed yet. I'll update regarding serps after 2-3 weeks.
OVERALL, I'm happy by the work OP had done. I would recommend this service.
Ratings: 8/10
Thanks