Cheaper manifolds may need some work to fit and seal nicely. May also crack.
It's an expensive cost for a nice manifold when the downsides aren't huge. But nothing going wrong is great.
If I had budget. I'd go whifbitz kit also. Decent manifolds for sure last longer. That's a promise. But is it essential. Probably not.
You can't go budger waste gate and not take a risk.
Turbo is the same but less of a risk as its rarer.
Its all about probability with those items. Cheap metal work isn't a big deal but everything else, you're taking a bit of a gamble in performance and reliability.
If you're into the work yourself and don't mind making stuff fit right. You can probably save some tokens buying cheaper parts here and there. Maybe even second hand top end parts. But if you're not massively into part sourcing. Just buy a kit, and play it safe man.
Invest in your car bro. It's more money to fix it than pay for extra expensive stuff. It'll also make it more sellable. No one will want top dollar for budget NAt stuff.