They are all "upgrade" / option parts.
I would not use any of them (except maybe the LA215H) as the "H" material is VERY brittle.
The stock plastics used in the ZX5-SP kit are second to none at the moment (much, much improved over the original ZX5) and I see no reason to change them. In fact I don't have any ali upgrades on my car and have yet to break any of the SP spec mounts, towers etc. (I have broken a couple of parts from the earlier car on my original car + conversion ...... but nothing that is of the latest spec!!!)
Save your money and have a more reliable car ..... win / win.
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