Thanks for the replies you guys!
GSA SEO indexer - i already have it, it's good at indexing, however it's really slow and it does not work well when it comes to huge amounts of links.
Link Huggers - i was actually looking at that, their $20 plan might be exactly what i need - @ch3mik, how are you tests going with it, what kind of indexing rate and speed do you get and what kind of links do you send (from my experience, high and average contextuals get indexed naturally in less than 1 week if you're building a 2nd tier to them, it's the crappy ones that i'm concerned about as they are the ones that really need indexing).
Lindexed - i keep hearing good things about your service @BassTrackerBoats, so if possible please let me know what are the indexing stats (speed and rate - especially for crappy links).
Instantlinkindexer - it's a bit expensive and to be honest, i tried their other indexing service, indexification, and it was crap - based on that, i would assume that instantlinkindexer is crap or whoever owns the company has a really bad business strategy, creating 2 similar services, one bad and one good (provided that instantlinkindexer is in any way good).
Linkprocessor - i have tried it in the past, not with great results, only got 30% or so links indexed (only the good contextuals) - and as they say on their home page - "100% Guaranteed Link Crawling Service" - LINK CRAWLING NOT INDEXING.
In the past i have been using The Incredible Indexer - it worked really well, 65-80% indexed but it kept going offline all the time, some times even for weeks.
So right now, link huggers vs indexification vs incredible indexer (if someone had any good experiences with it lately).