Welcome..
The Techie arm with Sumiko shell should take most middle-range cartridges, but the DL103 is not really one of them tbh..
The BPS and Blackbird may be high output MC's (no doubt with more coil turns to give greater efficiency), but the latter especially is a precise and refined model which should be competitive with Dynavectors and others.
In some ways, I'd be inclined to get an AT120E for the techie arm and save up for a Jelco 750 arm, which should be better for all top end cartridges out there. Going higher than this will cost loads for a small difference IMO..
Tear down these walls; Cut the ties that held me
Crying out at the top of my voice; Tell me now if you can hear me