OK, I'll think about it.
The trade off is either:
1. Get HR54, HD on current TV, SD on old TV. (In the future if I get a new tv), HD on new and old TV assuming I split the HDMI
2. Get HS17/C61K, HD on current TV, nothing on old TV. (In the future if I get a new TV), 4K on new TV, nothing on...