I have both played and even created mods for BGT and EET and I always tried to get as much as possible in an install (even at the price that at one point or other you had to revert to console or even repair some code). Those mega-mega installs are never bug free.
Accepting that fact, I would leave all the pros and cons out that are inherited from the base game (i.e. old game vs EE's), that is done elsewhere.
BGT
- has the larger selection of mods overall (at this time) but also the greater risk to have incompatible elements in your install. Be careful not to take too much. It helps to use BWS and the fixpack options to reduce both incompatibilities and bugs, but if you go beyond a certain selection, you always do it at your own risk.
- BGT contains a large number of mods that are no longer maintained, BWFixpack tries its best to repair known issue, so highly recommended to use this even if you do not use BWS to install.
- A number of more recent mods no longer take the old game into account, i.e. are not available for BGT. You get little new stuff for BGT, but there is sooo much already that you may not have tried before.
- Regardless of any development, BGT stays a game that *glues together* two separate games and thus provides limited continuity e.g NPCs that are killed in one part re-appear later, you cannot return to a quest in BG1 when you moved into BG2, chapters repeat after the transition etc.
- BGT has a number of *proven* and stable install option (if you use BWS) which almost guaratee you bug free installations based on your personal preferences.
- BGT is hard to maintain, especially the core of it (BGT mod itself) and ToBEX support are not updated anymore. Active support is only by a large player/modder community but no longer by the original makers.
EET
- has only some of the big mods at this time (some like CtB or LR are under way) but those that are there have been *renovated* (e.g. all known fixes are included) and it was attempted to balance these mods (reducing exaggerated XP gain, overpowered items or enemies) for a big install.
- EET also offers a daily growing number of new mods that will never be ported back to the old game. Plus not yet converted mods are still being added. (This may also be a chance to loose some fairly outdated mods in the process, there is really stuff in BGT that is there since ages but not needed anymore.)
- Some tweak mods (e.g.SR) make use of new technical features only avaolable in EE to improve their functionality. More kits are available in EET as well.
- Many of the old mods are not simply converted but also improved during that process, often a new modder has *adopted* a long abandoned mod and done the necessary improvements. EET can as well be installed with BWS support.
- EET provides full continuity of the game, i.e. a single worldmap on which you can move freely to all explored areas from any part of the game. NPCs keep their stats/abilities etc through the game, i.e.an NPC you developped during BG1 will not be replaced by a BG2 doppelganger but be the same character. Chapters and journal entries are continued.
- EET contains the whole mssing part between Sarevok's death and your capture by Irenicus and provides a logical sequence of the PC's story.
- EET is young and growing which is good and bad, it does not have the stability of *proven* install options, although the overall game is very stable.
- EET builds a lot on experience made with BGT and thus avoids to repeat all the old mistakes.
- EET has direct and quick support from its creator and other modders + the underlying game itself is still supported by the developpers (also to mention that these experts are part of the modding scene still.)
Look at arguments and then decide what is more important for you. Then add the EE vs. old game arguments you find reasonable to the evaluation.
PS - do not listen too much to other people's opinions, try to stick to arguments that are important for you.
Edited by Roxanne, 02 March 2017 - 01:24 AM.
Jarno was 
