Net,
Everyone gets together on all the trips and group sizes seem good, the smallest number I've been with is 18 and the largest group 45.
I've enjoyed all my trips not done a bad one yet so can recomend them all, so far I've done Americas Golden West, Treasures of Andalucia, Parks & Canyons, Discover Mallorca and Lake Annecy (christmas).
Just go with what you fancy most, you wont be soryy.