Best tool to promote big quantity?

So what I need is actually a best way to promote 500 pages per day that target very long tail keywords.

For those keywords, 10 backlinks for each is more then enough, so I need the tool that will do this in a fastest way with some minor acceptable performance.

My first choice till now is Scrapebox, I am also thinking about investing into Xrumer if it is faster.

So I repeat I don't care much about the quality, I just need the fastest way to build 10 links to 500 pages.

Thank you guys!

10 links per day or in total? If it is total thenn Scrapebox will be the best that I know of. Per day, maybe someone else can reccomend.

XRumer.

I do this scale of work pretty frequently with it, works great.

Of course I also have SB and LFE and an entire server cabinet coming in on Monday lol.

Well, the thing is that 10 per day per site on these 500 sites for one week and then I would probably stop, and do next 500. It is for very long keywords so I suppose that would be enough for some google love.

I dont have any experience with both Scrapebox or Xrumer, so what I need help with it which tool can give you an option to input 500 urls at once and then start linkbuilding on each.

Of course if there is some 3rd tool that does it well, it would be nice to know.

Basically, you just take your URLs and put them into spintax such as:
{URL1|URL2|URL3}

And use a LARGE list, or multiple lists on XRumer. If you're interested in trying it out to see how well it works just PM me. I can give you a trial run on a couple/answer more questions.