You don't have to use any indexers, and make sure to uncheck Indexers, Trackbacks, Exploits, and all the junk that wastes your resources and time. Instead, grab a good link list and build two-tier projects. I build 10-15 verified links per month, and I have officially canceled my Ranker X and opted for verified lists for GSA SER, and it's worth more than everything.
I'm not an expert in the subject, but according to my own findings on my niche websites, I get success with GSA SER articles, forums, social bookmarking, and even comments where it has <30 OBL. I enable the PR filter even when I go through premium link lists, and I am getting good verified links that automatically index within 2 weeks. I also tried Speedy Indexer, which gives me around a 90% index ratio, but they seem to get de-indexed after some time. So now, I only use GSA without an indexer. From this month, I don't use Ranker X or Serlib for my projects... Not because they are useless..Jut expensive and there are lot of options than them. So using GSA SER along with a proxies / link list more than enough
This is what i do. From the beginning i was worrying about those big numbers and tried to get big lpm numbers on the counter after some time i realized all we need is diversity with good engines and most cases there is no worth on lpm but quality engines on GSA