London Scottish and Rosslyn Park are both aiming high in their first seasons as full-time rugby clubs.
For Park, it will be a first-ever experiment with professionalism, while for Scottish it will be a second attempt following a botched effort a decade ago which ended in financial disaster and an eight-league relegation.
Both will be among the favourites for the National Division Three (South) title when the season gets underway on Saturday.
But while Park boss Shaun Justice is being cautious about his side's aims, Scottish head coach Jim Kelly is in no doubt.
He said: "With the support we've had, our aim is obviously promotion. But I'll see where we stand after the first six games.
"We've got some very experienced players and made good signings, which will help with the long league campaign. I've been impressed with the way the new boys have gelled with the squad and the way the existing boys have raised their levels."
Scottish have taken the scalps of Basingstoke and Westland Park in pre-season, but went down 62-10 to Wasps A on Saturday.
But Kelly was not too down after the first visit of their former Premiership rivals in 10 years.
He said: "Wasps are obviously a class outfit and were far more clinical with the opportunities which came their way, but our boys put sustained pressure on them for long periods."
Charles Broughton and Anton Petzer ran in the tries for Scottish.
Park also had a friendly defeat on Saturday, but their's was far more disappointing as it came at the hands of Luton, who were relegated from National Three last season.
They went down 46-20, despite tries from Rob Jewell, James Clark and Adam Gates.
Justice said: "We've recruited with a longer-term sustainable look. If everyone stays fit, we have strength in depth in all positions, and competition will be fierce throughout the squad."
Meanwhile, National Three (South)'s other club from Chronicle Country, Richmond, have so-far resisted the temptation to return to professionalism.
Like co-tenants Scottish, they were relegated eight leagues after financial turmoil in 1999.
But they too are now back in the national leagues after winning London League One last season, and warmed up their return with a 45-12 win over Bishop's Stortford on Saturday.
New signings Gavin Hart, Chris Butt, Ian Buzza and Roddy Turner made an immediate impact with tries, while Simon Hallett, Henry Head and David Burr all crossed too.
But Richmond will be sweating on the fitness of fly-half Matt Hart, who pulled up on the touchline after kicking two conversions, leaving Luke Cousins to take over kicking duties and convert three.