Arrj
The 120 will physically seat 5 people far more comfortably than an R66, that's for sure. From a performance perspective though, you're right. The 120 is sensitive to W&B when it's fully loaded, especially if it's hot 'n' high. For me, living in the cold UK valleys, I rarely need to take 5 'above average weight' pax AND full fuel and that's why I said 'for my purposes'.
Not every machine will provide everything a prospective buyer is looking for and ika's decision will be based on his own priorities, budget and general circumstances. I looked at all the same aircraft he did and selected the 120 because it ticked the most boxes for me. No regrets so far
TTB