I am not sure if I should use myisam or innodb for my mysql DB.
My needs:
I will use full-text search. Both myisam and innodb support this since mysql 5.6
I will only do inner-joins between different tables
About 75% of all queries will be SELECT, that has inner-joins
Will myisam be best for me consider the stuff above?
Also, can I do inner-joins between one table that runs myisam to a table that runs innodb?
Eg my users table is innoDB, I do a inner-join from that table to the product table that runs on myisam. In order to get all products for a user.
The information you have written here, what you are looking for, does not state which one of the engines would fit you better. Both meets your requirements.
A very simplified way to determine what engine suites you better is if you are looking for speed or consistency, eg: myisam for speed and innodb for consistency, but you will then need to work with FK constraints. The comment of Hanky that linked to MyISAM versus InnoDB tells you more about the differences.
If you are looking to do a full-text index, you could also have a look at sphinx