Just digging this one up again, but for good reason.
Picked up my car from BM Wise today after having the gearbox rebuilt and a new clutch and flywheel.
They took the box out and sent it to a trans specialist I'd pre-arranged.
While the specialist dicked me around for nearly 3 weeks, BM Wise were happy to keep the car under lock and key at their premises.
When I picked it up this arvo, there was a new bearing noise, only this time from one of the drive belt idler pulleys.
They already had a 320i on the jacks that had just had the same pulley replaced so they swapped it there on the spot and didn't charge me for the part or the labour as I'd dropped so much cash there already.
So, 10/10 for BM Wise (and 5/10 for the trans specialists)