I have studio but I havent used it much. I dont like the changes to add the sandboxing so it could be used for html5. Thats my main turn off. It breaks all the file i/o functions or limits em in some way to greatly restrict loading/saving/using outside resources. Thats a huge deal breaker for me cause 99% of the time all I use GM is for the engine structure. I use all external resources and 9 times outta 10 make my own editors vs the built in room editor. So Im still stickin with 8.1 for the foreseeable future. Hopefully the change theyve mentioned with the licensing system on the old versions wont keep use from usin 8.1 as long as we want