First time I thought it's not the best. I missed a lot of commands from xp that was in rm2k3, and I didn't know how to use Ruby. If you know Ruby, this can be the best(now I'm started to examine it, and I realized some things).
The second of my problem is the game was slow in some places, but I guess it can be fixed too.

to sum up: RMXP is the best for advanced maker users.