Cassette and chain

In just over a year its looking like I need a new chain and cassette (in fact in less than a year, probably 8 months).
I need a cassette and chain for an 8 speed sora groupset.
Recommendations please?
I need a cassette and chain for an 8 speed sora groupset.
Recommendations please?

Food Chain number = 4
A true scalp is not only overtaking someone but leaving them stopped at a set of lights. As you, who have clearly beaten the lights, pummels nothing but the open air ahead. ~ 'DondaddyD'. Player of the Unspoken Game
A true scalp is not only overtaking someone but leaving them stopped at a set of lights. As you, who have clearly beaten the lights, pummels nothing but the open air ahead. ~ 'DondaddyD'. Player of the Unspoken Game
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SRAM/KMC/Wipperman - take your pick
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There's not much you can do wrong, more money gets you lighter parts - but Sora's pretty low on the groupset tree, I wouldn't have thought it would be hugely worthwhile spending proper money on a new cassette.
Chain-wise, go with reddragon's suggestion of chains. Just avoid the shimano ones.
"What happens when the hammer goes down, kids?"
"It stays down, Daddy."
"Exactly."
Shimano offers more choice but largely the same ie not much difference.
12-21 - 12.13.14.15.16.17.19.21
12-23 - 12.13.14.15.17.19.21.23
12-25 - 12.13.15.17.19.21.23.25
13-23 - 13.14.15.16.17.19.21.23
13-26 - 13.14.15.17.19.21.23.26
the easy split/join chains are good advice though i think you already use them?
I'd be tempted to go for cheaper more robust parts than race parts which will get eaten alive by the coming winter's grot.
I'd suggest KMC X8 chain together with a Shimano HG50 cassette. And a Park chain checker.
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and get a half decent one some of the cheaper ones/on multy tools break bend as soon as look at them.