Its between starforge and scmdraft 2.0.
X-tra 2.6 is still good for triggers as starforges are still a bit buggy and scmdraft 2.0's are being worked on.
Starforge has a big more sprite placement i think, matters what you want. Personally i suggest starforge for bounds. Cuz you can type in like:
64 x 64 for square\rectangle (isometric still buggy)
or whatever u want. Scmdraft 2.0 it gives you mutliple choices like scmdraft 1. Matters what u wanna make these days.