I've had about 3 ER-6Fs over the years among other bikes. It was my first and after a detour around some other bikes, I'm now back with one. I traded in a ZX-6R to go back to it. So lets compare, I do miss the top speed and it doesn't corner anywhere near as nicely. But... it doesn't do that bad of a job and it's still stupidly quick off the line in the low speeds. But with its upright riding position, its so much more comfortable, along with a quite comfy seat, including pillion.
Filtering and commuting through traffic is so
easy with its great turning, light and nippy body. With a few extras it's also a nice baby tourer, with top box and givi side panniers - When fully loading though, be prepared to adjust lights and preload - but once done gets the job done.
Now for the negatives, The Mirrors. ... Get mirror extenders, otherwise the mirrors are awful. Once done though, they're acceptable.
The stock factory tyres, they're not particularly grippy in the wet or even dry.
The negatives, are the mirrors. They are awful. Get mirror extenders for them as a priority. Also the stock tyres are pretty terrible in the wet too.
Anyhow, great starter bike, commuter, baby tourer (With addons). Not a good sports bike, but then it isn't one, even though has the looks.