As has happened to so many of FL2s on here, I need to replace a split turbo hose - specifically the short one that can be accessed from the top.
Question is, can someone recommend the best after market replacement please? As much as I’d prefer to use genuine parts, 120 quid for 15cm of hose feels a bit much!

One word - silicone.
Most folk replace the rubber hoses with silicone ones. You can take your pick on eBay.
There are fancy performance names and colours available, but you just want the right fit and good quality ones.