Let's talk about Irregular 15 mm figures

[Conquistador]

After a really bad expeience Irregular with "15 mm" Science Fiction figures (Giants as "15" mm and too short as "25" mm) I wanted some information on their 15 mm Colonials before I think seriously about a purchase.

I am looking for some 15 mm European/Indian troopers for VSF games (replacing my 25 mm figures) and I am looking at FZ6, 7 , 8, 9, 10, 14, 15, 18 for Europeans; FZ 40 - 51, 53 and 94  for indigenous Venusians,  FZ 95/96, 98/100 for Mercenary East Indians,  FZ 108 - 110 for FVL (FFL on Venus,) and othersof this line.  I wonder how they compare to Rebel Miniatures/Khurasan Miniatures/Black Hat Miniatures in size/bulk. I am not very picky but something "too big/too small" probably won't workfor humans (aliens is another matter.)  

Comparison pictures would be ideal, descriptive comparisons would be appreciated.

In advance, Gracias,

Glenn