I see what you mean by the quality of the later HG's Stompy... I may revisit them later on, but for now, MG's are the way to go for me (prefer the scale and the detail).
Avalanche Exia and Harute look nice - like the styling and look of them.
So I attempted to tackle MG Sinanju last night - spent 2+ hours and only managed to build his torso, head and one arm.
Love the intricate detailing and all the bits and pieces so far, but will take my time building this one since I want him to look as awesome as he does on the box.
MG's of Strike Freedom & Astray Red Frame are on order, so would like to finish Sinanju before they arrive - I've got at least a week I think.
Will probably tackle Strike Freedom next (when it arrives).
What's Deathscythe like? I like the look of him and may order him when I order Musha Mk-2