The Trident is worth a small fortune Rod.The GPz is also worth a pretty tidy sum. 
I have some very fond (and some very scary) memories of the day I borrowed a Trident when I was 16.

I was slowing down for a roundabout with my older brother on the back of the Trident and he assumed where he had only had small bikes I would stop for a car approaching on the right, where I knew I had plenty of time to pull onto the roundabout in front of him. So, I gave it a big fist of throttle, the next thing I know is my brothers legs are under my armpits.

Whenever, I offered him a lift after that he always politely declined.

Still it didn't put him off bikes as he always fancied a big bike and now has a ZZR1100 which he uses for rideouts virtually every Sunday.
The Trident is a great bike, its weaknesses are the single plate clutch and over-pressuring of the rocker boxes which leads to blown rocker box gaskets, a 120W alternator, which struggles to keep the battery charged if used a lot with the headlamp on and it is a real pig to start in cold weather. Like all British bikes, you have to swing the kickstart like you mean it.

I've owned the Trident since 1978 and at some point I will completely rebuild it as I know it will be money well spent. The Kwaka, once I sort out the minor problems, will become my regular bike again, where I prefer riding bikes to driving cars. I only stopped riding it to economise during the 2007/8 recession. It was the last of the big air cooled 2-valve 4's which was replaced by the GPZ900 which is very much a sought after classic, but I'm sure just on rarity and originality where it has all of the original parts apart from a 4-1 motad exhaust, but I still have the original in the garage, with a rusted away collector box. I like the fact it has digital fuel injection as on open roads it returns 45mpg even when pressing on. It is just a bit gutless at low revs with power really building from 5000 rpm and by 6000 rpm to the 9500 rpm redline is where it all happens. By modern standards with just 120bhp and 244kg it has about the same acceleration as a 600 sports bike. Being a big heavy lump you have to show it who's boss for fast committed cornering.
