argh.
Factory bought kits are only twin pass to keey the engine bays looking stock and utilise the OEM charge pipe, this makes N75 and DV fitting much more simple.
The forge kit is OK, but hugely expensive, and still retains the stock charge pipe and pancake.
The THS kit is better, and replaces the pancake pipe, but it's still a twin pass, and still uses the stock charge pipe, so no good for anything with a turbo swap above a ko3S, or a high power ko3 hybrid that needs 2.5'' pipework.
The toyosports type B cooler is what you make of it - potentially fantastic, potentially fail-tastic. Depends on your level of skill to be honest!
The complete toyosports kit with custom pipework can be done for less than £250, and will absolutely 100% out perform the Forge or THS coolers, but naturally, it is more work to fit it, and you need to work out what bends / pipes you need then make it all fit, it's not an off the shelf kit at all, it's alist of parts bought from different places.