I can heartily recommend the Cubot GT90 for around £60.00 on Amazon
It's dual SIM and dual core (1.2MHz). Camera is quite basic at 3.2 MP - but otherwise the handset is snappy performer.
Android 4 inch screen - very nice.
+Steve
[size=2]Steve Gold
PO Box 1014, Sheffield S10 5YG, UK
Home mobie: Telefonica O2
Other UK mobiles: 3, Vodafone, Virgin
Foreign SIMs: Toggle (multi); Germany (Fonic); Poland (Orange PL);
Skype: stevewgold