Board Thread:General Discussion/@comment-775697-20150128051757/@comment-1824272-20150128092119

It all depends on how far down the tree you're talking about. The new parts that have appeared after the FB-22, F-35, F-22, and T-50 are extremely valuable and will therefore take a longer time to research. Ditto on the aircraft like the X-02, ADFX-01, and ADF-01.

However, that's only because those parts are that far down the tree. Just earlier I purchased the F-117A Nighthawk for the first time, in order to do the special GPB challenge under the "ATTACKER Pilot" challenges. The two parts after the F-117A researched immensely faster than the parts immediately before the X-02 that I had also recently purchased. Keep in mind, this doesn't include the fact that newer players get a bonus in research early on in the tree; the parts after the F-117A are too far down the tree to count for that bonus.

It all depends on the parts and how valuable they are. Nothing's been changed to the core experience.