Find ones you locally like the look of at your budget? Bath wise, I’d always go steel from Kaldewei or Bette (depending on which has the size you need, my bath is shorter and wider than standard). Basin wise, do you want pedestal, wall mounted, fitted in a unit? Ditto the loo, what style do you need, I had to have close coupled fitted in a unit due to the positioning of the plumbing.
I’m in the process of replacing my cracked Sottini basin, I’ve gone for a Twyford model from City Plumbing (local, part of Travis Perkins) as it best matches the size and shape of current.
I’ve ordered a Bristan and Hansgrohe tap, need to see which I prefer (not been able to find the Bristan in store to handle).
other than the basin my Sottini loo, and Kaldewei bath are going strong (fitted end 2004, I know because tiler got stuck in Thailand due to the tsunami!)