The 450 stretch (480) originally all began when the Outrage G5 was released, people used the outrage g5 tail booms to stretch their 450s, then Tarot came in the scene, alzrc followed, then the Warp, then the X3 and now you can get the 450L. Tarot provides reasonable quality extension kits, if you want something better you can use 450L parts to extended your 450 pro.
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PS the Devil 480 is sub standard in quality, alzrc has really dropped their game, they either need to drop their prices like HK or improve on their quality.