If I wanted decent quality scans from film (neg or trannie) I would always have images scanned by a professional using a professional drum scanner. Yes a cheap flatbed will do a job, but certainly not professional quality.
There was a time when print 'repro' houses were everywhere and it was very easy to get scans done, but they don't really exist anymore (due to the digital revolution) but there are a few specialists if you ask Google.
Yep, tell me about it. That's what I used to do, on a Crosfield 6250 drum scanner. It got replaced by a Scitek A3 flatbed, which was crap by comparison. A mate bought, on my recommendation, an Epson all in one around three years ago, and it does fantastic quality scans, much better than the £35000 Scitek ever did.