RX888 versus SDR Play receivers?

[Max]

I am interested to hear opinion from anyone why has both one of the SDR Play receivers and also a RX666 or RX888.

I have an RSP2 Pro. Just wondered if there is any area at all where the RSP2Pro offers any performance advantage over the RX888? At VHF/UHF for example? Yes, obviously the 32 MHz bandwidth of the RX888 is a given, but at VHF/UHF the bandwidth of the two is similar of course.

One possible area is not sure if RX888 goes down as low for VLF? Grimeton transmissions on 17.2 kHz for example?

Just thinking of acquiring an RX888 to replace the RSP2Pro but don't want to jump then realise too late I should have kept the SDR Play.

73

Max