A couple of years ago I had a similar situation.
Was using the Viking ED Pro (not the FF) and part ex'd for some secondhand Opticron Auroras 8x42 - the Opticrons were over 100g lighter and the difference (to me) was very noticeable.
The ED Pro's had very good reviews back in the day - they were made in Japan - I think they weighed around 840g.
The Opticron Auroras are also made in Japan - and to my eyes were better in just about every way. From memory I paid around £200ish to make the switch and I've absolutely zero regrets.
Was using the Viking ED Pro (not the FF) and part ex'd for some secondhand Opticron Auroras 8x42 - the Opticrons were over 100g lighter and the difference (to me) was very noticeable.
The ED Pro's had very good reviews back in the day - they were made in Japan - I think they weighed around 840g.
The Opticron Auroras are also made in Japan - and to my eyes were better in just about every way. From memory I paid around £200ish to make the switch and I've absolutely zero regrets.