With your budget I would go for this:
Technomate TM-Nano-SE M2 PLUS Enigma 2 Linux HD PVR Twin tuner Satellite Receiver £128
No, have a look at the xtrend 7500 if you want a Internal HDDThanks they both look good. Will the edision take a hdd. For recording ect?.
For your budget any reciever will do, they all have a 750 MHz processor inside so there's no difference in between any of them as all the software you will load or have loaded is the same on each receiver.Not bothered internal or external as long as I can record.