I bought a Spesh Globe Sport £250 about 2 years ago & I was 18.5 stone (lost a bit since then tho
It has been fine & wheels are still true after around 3000 miles, so more than up to the job I'd say.
My cycling has been mainly on cycle tracks (TPT) & roads, nothing too heavy & I have used the bike to do the full Trans Pennine Trail & Coast to Coast