But not so fast there ..
Your lower level resonators are very valuable, especially your L4 resonators. Think about it:
- If you are a Level 8 to fully power a portal by yourself you need:
- 1 L8, 1 L7, 2 L6, 2 L5 & 2 L4 Resonators to make a Level 6 Portal
- If you are a Level 7 to fully power a portal by yourself you would need:
- 1 L7, 2 L6, 2 L5 & 3 L4 Resonators to make a Level 5 Portal
- If you are a Level 6 to fully power a portal by yourself you would need:
- 2 L6, 2L5 & 4 L4 Resonators to fully power a Level 5 Portal
You get the picture.
But there may be strategic reasons for building lower level portals; i.e. being able to readily hack the L4 and lower level items you need.
I can't tell you how many times I haven't been able to complete fully charging a portal because I haven't had L1- L4 Resonators. It is irritating. So do yourself a favor and be sure to hack/build lower level portals regularly so you can build your stock of L4 and below resonators.
Now, the same does not hold true for the XMP Bursters. As you move up your strategic need for lower level XMP Bursters goes down. I generally keep XMP Bursters of my level and 2 below and strategically use my lower level ones as not to waste the higher level ones.
But don't don't just drop them or recycle them. Help an up and coming player of your faction and arrange a drop.