Samuelsohn makes a good suit even if it's not quite at Oxxford's level. Certainly nothing to complain about. If you like them, it's an excellent choice. However, If you still want to get an Oxxford suit but want a more contemporary look, check out their Radcliff line. No one will ever mistake those for sack suits.
It's MTM rather than bespoke, but still a high quality product. Yes, Oxxford tends toward the sack suit but recently they did create the Radcliff line which uses a more modern, slimmer cut and silhouette. I haven't kept up with them so I don't know if the Radcliff models are still being offered, but that's something to check for. Can't comment on Wingtip. No experience with them.
Let us know who this recommended shirt maker is. The only shirtmaker here in L.A. that I feel can deliver to Freddy's level of workmanship or better is Anto, and their shirts cost a good deal more than Freddy's. We had it good price wise.