I think both will give you plenty of setup options. In fact, from the EX-1 I can say it has an incredible amount of features, more than you'll likely ever need.
I recently was looking around for a new TX as well and really liked the KO Propo controllers: the feel oozes high quality, it makes the competition feel like toy grade controllers! However, I did find the EX-1 somewhat top-heavy - something many high-end transmitters suffer from by the way!
Luckily KO Propo offers an alternative for that, the EX-2. After trying several controllers, I opted for this unit:
It has the same response times as the EX-1, the same KIY modular construction, it's more compact, weighs less and has the weight lower down. At the same time, I find it still offers an impressive array of setup features and adjustability for your preference and comfort.
Price-wise, both the EX-1 and EX-2 are cheaper than a comparable controller from Sanwa, their top end receiver is cheaper than the Sanwa units and they also offer receivers down to a much lower price range, for the budget-conscient hobbyist.
As you might hear, I'm pretty enthousiastic about it... Admittedly a lot is down to personal preference and feel, but if you are taking your time I would definitely recommend to find people with an EX-1 and EX-2 and try them out
