4-2-1 manifolds

[GR4]

I'd be interested to hear any views or experiences on 4-2-1's (for a K Series S1). There are a number of alternatives out there from Eliseparts, Piper, Janspeed etc, so are there significant quality/performance differences that make people lean towards one or other of them?
Thanks

PS If anyone has one that they were about to put in the classifieds, please let me know!

[Mr_C]

I can't remember if mine's a Janspeed or a Piper, but it's good

[stew-S160]

My sport160 now has the eliseparts manifold, the original is the 340 manifold. big difference. all good

[NWTony]

I've just purchased, although yet to receive or fit, the Larini manifold. Worth a look on their website, the spec sounds good.