Not only are their recruiters top-notch, but they also consistently work with top-quality clients with above-market base pay offerings for SDRs and a minimum of 4.5 stars on Glassdoor. I'm unsure if they have some heavy internal client vetting process, but whatever they're doing has been working out very well - for myself, at least. Review collected by and hosted on G2.com.

I don't have anything negative to say about ISG, just typing since there's a minimum character count for this section. Review collected by and hosted on G2.com.