I suggest looking up the options locally available and posting them here for feedback. Dealers might not stock all brands/models.
I've been using Dell monitors for years now and think they do well for most purposes. Currently own a 22" and 24" from Dell. They also offer the UltraSharp line of monitors.
ASUS makes great gaming monitors, so consider this when you go monitor hunting.
BenQ monitors offer a great deal more than the competition. It's just their availability, long term reliability and A.S.S I would be worried about.
As suggested above, rule out IPS panels for now because gaming is top priority and response time matters. TN/VA panels are what you are after.