olimits7 - 2:50 pm on Feb 18, 2013 (gmt 0)

Hi,

I'm interested in joining one of the following site explorer sites. I'm mainly interested in seeing what websites my competitors have backlinks coming from.

I know each one produces different type of results, but currently I can only afford to join 1 of these sites; ao I'm looking for the best one to join.

Does anyone have any experience with these sites? Do you recommend one over the other?

- Ahrefs
- Majestic SEO
- SEMRush
- Ispionage
- Etc.

Thank you!