I have one fitted in my Hawkeye and I think its a brillant piece of kit.
There are two model types a 4 line per page (original) and an 8 line per page graphic one, mine is the 8 line type which are much better.
The only problem you will have is getting hold of one they are like Rocking Horse Shit and the new ones even more.
The last 8 line type I saw for sale on scoobynet, the guy was wanting £650 and he got it.