I think it matters. I'd rather not spend good money on film that I know little about. Maybe it is a new emulsion. Maybe it's Efke 25. If that's the case, why bother as the pipleline will run dry shortly. If it's Pan-F, why should I pay an inflated price for the Rollei brand?
£3.32 per roll of 120 Rollei RPX 25
£3.69 per roll of 120 PAN F Plus