I took my test in a V8 D1000, so I suppose that’s a good place to start. I always had a soft spot for those Perkins V8s, they sounded so meaty compared to a six pot, of course it was all an illusion, they were pretty gutless, but they sounded as though they were doing 100mph 
Next up were Mercedes’ of all shapes and sizes from the naturally aspirated 1626 or later 1625 which were not a lorry for those in a hurry. They were very reliable, quite good on fuel and that’s about all I can say really, the main thing I remember about them was how slow they were on a hill, I used to joke that I only drove them at night on sidelights so they couldn’t see the hills coming
I also had a brief spell in two V10s, one a RHD 1632, the other a LHD 2032. They both had plenty of low down pull, made a very nice noise, but were unremarkable in every respect as I remember 
After those, thankfully, came a 1633, what a difference those turbos made, those things were flying machines, only let down by the ponderous gearchange from the ZF Ecosplit gearbox. That was addressed by EPS, had an early D plate 2035 and I did more miles in the workshop van getting a lift back from Merc’s workshop than I did earning a living in that thing
However, the Powerliner 2 sorted the reliability issues out, I had a 1735 which never let me down, it was run hard too and with some very neglectful servicing, yet that thing was a beast of a lorry, it was definitely built on a Monday morning after the best weekend Wurth had ever seen, that little Merc would live with 142 Scanias over the mountains 
A brace of V8 Scania’s followed, two 142s and a 470 143, the 142s were fantastic lorries, well on top of the job, reliable and a pleasure to drive. The 470 was a disaster, it was built only to make the early EPS Mercs look reliable 
Then came one of the most underrated lorries ever made, a 190-48 TurboStar, that used to eat 143s for breakfast, I never put a spanner on that thing, it was a fantastic lorry, if you’ve never driven one, you missed out, believe me 
From that I moved into a brand spanking new Actros 2540, I liked it, it was on top of the job (containers) and was remarkably economonical, especially so after buying the fuel to charge over the Alps in that big FIAT 
A 144 Scania followed the Merc, I was running a log book with this lorry as I was carrying chopped up cattle under the OTMS scheme, somehow the speed limiter fuse became ‘loose’ and I spent my whole working day in the midddle lane
It also did the odd trip to Germany with hanging meat. It too was very good on fuel, considering the volume of work it did 
Another big FIAT is next on the list, this time a 520 EuroStar, only one thing to say about this, WOW 
I saved the best until last, my 143, one of the final models on a P plate and without doubt, this was the best lorry I’ve ever had, it never let me down apart from an alternator belt and an injector pipe, which both happened within a mile of a Scania dealer. It was a pleasure to drive and reasonably economical, like the 1735, it was one of those lorries were every manufacturing tolerance was in its favour and because of my experiences with it, I think that the Scania 143 is the best lorry ever made 