As I grew up in the 1980's and 1990's my 2 favorite GTI out of the 7 has to be MK 1 and MKII. I have driven many Golf I GTI's and nearly bought one at one stage and but i am happy that I finally bought a 1988 GOLF 2 GTI 1.8 8 valve when I started my first job in early 2000's and that 8 valve model many people say is the best GTI model out of MK1 and MK2 models, even better than the MK2 16 valve. The MK 1 had its charm of that excellent 1.8 8 valve motor, crisp 5 speed gearshift, sharp and direct unassisted steering (at high speed only cause low speed it was very heavy) and fun handling, but it suffered from bad brakes (too spongy), bad rear passenger legroom, bad electrics in the fuse boxes and some bad rust. The MK2 was near perfect, much better space and build quality compared to MK1, more quieter at higher speed although its engine was still noisy when cruising at high speeds, much better body with virtually no rust problems, no electric problems. That 1.8 8 valve engine is a masterpiece with fantastic low to mid range torque and flexibility, great acceleration in lower speed ranges up to 120km/h (I clocked it from 0-50 km/h in 2.5sec and 0-100km/h in 8,1sec at the coast) as higher speed the acceleration pulls back due to the aerodynamics not been really good (top speed I got most 200 to 205km/h indicated) nice rorty exhaust noise and superb chassis with better ride than the MK1 and less body roll with even sharper steering. I have driven a few 16 valves and it didn't feel any faster than my 8 valve, only at higher revs it was more eager to rev to 7200rpm cut out compared to 6700rpm on 8 valve, although it lacked the low to mid range pull and torque of the 8 valve and its exhaust note was less fruity.