CGr, that's how it usually goes but I voted 9503 and I have never owned a JR product.
Reasons
Trainer system compatible with existing 8103
Compatible with existing receivers
9 channels
50 model memory

The OP listed price, telemetry, and no SD card as cons for the 9503
I think price is soon forgotten when it's a good product
I do not care about telemetry but many people seem to think it is needed
Lack of memory card is not a deal breaker for me.