Both my scooters came with Michelin City Grip tyres. I usually fit Pirelli Diablo, but I don't think there is much difference.
Bought my last three scooters at Scooteria. Not my shop of choice, I prefer Scooter Central, but when I bought my 250 they were the only shop with the Vintage Red I was looking for, and they sold the other two $500 cheaper. Went back for my first service, and after that did it all myself. But Scooteria are good for spare parts.
The same Bitubo shock fits the HPE and the pre-2015 models, part PV014GEV on SIP's web site. Only the facelift (15-17) models needed a different one. The BGM shock also has very good reports. I fitted a Malossi front shock to my new white GTS, mainly for cosmetic reasons as it has a white spring, but the Bitubo on my blue scoot is much better.
I have never had a screen on any of my scooters. The small Vespa screen is supposed to add a bit to top speed, but it blows the wind into your face, ok if you wear a full face helmet, but I like open face. I suppose they are great in the rain or riding through clouds of midges, but I like to feel the wind.
Got cabin fever at the moment. Can't go out, and no-one to talk to. Would love to get out and buy some hot cross buns and chocolate, but the cops are being very strict this weekend. Anyway, I have some raisin bread which will have to substitue for the buns, and I have ice cream, so I guess I will get by. Spending most of my time on building some Meccano models. Hope you re managing to get some fun out of this Easter weekend.
All the best, Mike