I enjoyed mine – not rapturously, but enough.
On the plus side – I loved the raw colour, the kit was pretty good (don’t like SRAM brakes, though) and it was a nice ride.
On the down side – it was a bit short and ‘perchy’, the BB is high and it cracked.
I’d previously has a 26″ 456 Evo 2 which I loved, but the 45650b was nothing like a sprightly, so in this regard I never really loved it.
When it cracked I got a warranty replacement and flogged it to pay for a Dartmoor Primal 27.5. A retrograde step going for aluminium you might think, but the ‘steel feel’ that the Evo 2 had was completely missing on the 45650b. So lugging around the extra kilogram to no discernible effect made my mind up for me.
FWIW I think the ‘steel feel’ on the Evo 2 was due to the seatstay arrangement (four piece) rather than the gas pipe on the 45650b (which was what the original 456 had).
On Ones are good value for money and the customer service (as far as I’ve experienced it) is not as bad as some people say. I do live within an hour or so of the Rotherham store, though, so I did drive there a couple of times to sort things out in person.
If your horizons are broader than just steel, I can heartily recommend Dartmoor frames. The only issue I’ve had is that rear tyre clearance is a tad limited on the Primal 27.5 (a smorgasbord is about the limit in there if you need anything more than dust clearance).
Have fun – you won’t regret the 45650b, but there may be better options depending on what you want.