I'd have to agree with Swede on the GHR. It seems popular to have a GHR bench in the US but in the UK, you have to ghetto it up meaning not everyone has tried them. I'd also throw in a special mention for lat' work: both pulldowns and pull ups. If you want to stabilise a squat bar, bench with the right bar path and, to a lesser extent, finish your pulls, you need lat's.
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