What are the advantages, disadvantages of each, cost, own inventory vs reseller, % bot traffic etc.
Google - obviously strict but has own inventory.
The current consensus is that Decisive is a no-no. Many have had poor results with them, including myself. Therefore I'd spend time comparing the other two.
I would start on Go2mobi.
Plenty of traffic/exchanges and a much easier to use interface and system overall vs GDN.
I would definitely avoid Decisive...I took several profitable campaigns and targeted EXACTLY the same as other platforms and they all lost money...And I mean the EXACT same...Same Exchanges/Placements/Carriers/Devices...I'm not even sure how it's possible for my best traffic to have done so bad.