I've no particular preference. I'm Spanish and I'm fluent in English (fully bilingual). I own the full BG series and PS:T, but not IWD. So whatever fits me better.
Thanks for the suggestion. I'm trying VScode and it looks quite promising, although I have barely scratched its surface so far. However, I'm not sure of whether your extension supports tra files. I just opened a tra file and it doesn't have any syntax highlighting.
I intend to make it compatible with BG1 in the future, so I've published it in the General Modding subforum: Improved Spell Descriptions. So there goes my first mod. Thank you for all your help!