I've only had them do a couple things for me, Fast, inexpensive, and decent work. However, I always leave with the impression that they have low tolerance for Audiophile nit picking.
Example: rare speakers that woofers and/or re-cone kits were unavailable.
Them - "we can re-cone with a stock kit or get you 8Ω drivers that will fit for similar cost.
Me - "how would that change the voicing of the speaker?"
Them - "It would be an 8Ω driver, shouldn't hear a difference. But, if you want us to mess with the crossover you'll pay shop rate."
Me - "What about compliance of the suspension, damping of the cone, Theil Parameters, that sort of stuff?"
Them - "You shouldn't hear a difference."
I never mentioned being concerned with cost. In the end I just had them re-cone and it was fine, but I had never had a chance to hear the speakers with the original woofers intact so I don't really know if they hit it on the head. Re-cone kit was Foam instead of Rubber surround and cone was definitely different style of paper and felt heavier.