Magnat speaker any good?

[Chrizzz]

Can someone tell me whether my old Magnat Projekt 4.1 speakers are any good compared to other speakers? They sound good to me now but I want to upgrade my hifi-set. I have a JVC RX-616 receiver. I want to upgrade to for example a Yamaha RX-v750 or the Harman Kardon AVR330. Can I use the Magnat speaker to get a good balanced sound? Or should the sound get better by getting the Mordaunt short 302 speakers?

Thanks for your help.

Chris