I have the Hawkeye Total which does everything I need but you cant go wrong with Nanocom.

 

I still dont understand what to buy for a 2000 Discovery II ... You have these choices ...

NANOCOM Evolution for TD5 Discovery II kit

Code: NCOM02

Price: USD 425.78 (excl. VAT)

Weight: 665 g

Description

This kit includes The main NANOCOM EVOLUTION unit, NCOM21 Blue OBDII cable (~1.5 m long) and a USB update cable plus the unlock codes for coverage of the TD5 Discovery II systems. Click the More Info button for information on the Unlock codes.

NANOCOM Evolution for Motronic V8 Discovery II kit

Code: NCOM04

Price: USD 425.78 (excl. VAT)

Weight: 665 g

Description

This kit includes The main NANOCOM EVOLUTION unit, NCOM21 Blue OBDII cable (~1.5 m long) and a USB update cable plus the unlock codes for coverage of the Motronic V8 Discovery II. Click the More Info button for information on the unlock codes.

 

For your 2000 Discovery II V8, you want to purchase the MOTRONIC V8 DISCOVERY II KIT (NCOM04)
AND
the additional "NANOCOM UNLOCK CODE FOR DISCO II SYSTEMS (NCOM13)"