The C1/Aygo/107 siblings are great fun, once you get used to the engine noise, I particularly like the auto versions, because they’re easier around town, (I have a shonky left knee, stiff clutches are a nightmare), but the paddles allow a bit of fun to be had on open roads.
The Hyundai i10 is a rev-hungry little beast that drives well and is comfy enough for reasonable distances on motorways.
The VAG minis, the Up!/Citigo/Mii are all very capable, and surprisingly nippy, bringing a two year old Citigo back from Cornwall, and running a bit late, I overtook a Discovery 4 on the M5 at 105mph, according to my satnav!
Not that I’m advocating such irresponsible behaviour, but they’re more than capable of keeping up with traffic without straining.
Kia Vengas are similar to the Hyundai, but they do seem to have a battery issue if left standing for a while – the battery can go flat, and it’s seemingly moe common with the Venga. We get quite a few of them at work, and if I have to go and move one from storage, it’s a toss-up if it’ll start. This may not be an issue at all with a car that’s in daily usage, however; our cars may often be parked up for days, sometimes weeks before being sold and taken away, end even bigger cars have issues long-term.