My honest review of this service: Not very good.
I bought a total of 225 YT PVA accounts from SeoSid in three batches, and noticed deteriorating quality throughout.
The first batch was decent. The second batch was passable, and the third batch was abysmal. I have been given replacements, and the final batch of 40 replacements I left unused for a week, hoping to see if they were stable enough. They were not. About 10% were dead after seven days without me logging into them at all. But what was worse was that they were resold to some other party, don't know if that was due to SeoSid or the guy that sold the accounts to him. I noticed this problem when a bunch of MY accounts had a bunch of TV series uploaded to them (I don't work with TV-series).
I told support about this and requested a cash refund for a fraction of what I had spent, but all they could offer me were further replacements. I am not interested in this anymore. I have lost days uploading stuff, then re-uploading from cancelled accounts. I have lost almost $100 on this but spending more time uploading into bad accounts would lose me more money.
I informed them with the first batch that there were clear quality issues. First of all:
1. They rotated about 20 profile pictures. When I make YT profiles I use my collection of about 5000 profile pics, but for some reason these guys seem to think that 20 pics is enough.
2. Many of the accounts were not PVA. They had just had phone numbers added but were not verified. This is not PVA.
3. The accounts died in groups of 2-3. IE accounts that were adjacent to each other in the Excel sheet often died together. A clear sign of someone leaving fingerprints during creation.
So now I am back to creating my own accounts without PVA that I use for the same type of uploading. This is a lot slower than buying accounts, but at least the accounts survive indefinitely. At least 90% never die.
I have nothing to gain by giving these guys a bad review. I am not in the accounts business.
TL;DR Not a very good provider. They are decent people but the accounts are not very good. Bad accounts get replaced with other accounts that are bad.