Black Round Things.. Dunplop Vs Mich?

[PaulSmith]

...
I have BT021's on my Gen2 and they have been "ok", ...
... but the 021's have put me off a bit  :\

The 021's have not been made for quite a few years now so your tyres were probably well past their best even before they went on your bike. My own experience with 023's is that they are considerably better then 021's were in all areas (grip, wet and wear) and since I was delighted with 021's to start with, I now find it very hard to take the chance and try anything else.