I have been thinking of getting a flash to improve my low light photography (particularly indoors). However, there seem to be a number of different models available at similar price points (budget of INR 8,000-12,000 ~$150-250). What features and functionality should I look for to choose a suitable flash?
I'm using a Canon 550D with the 18-55mm IS & 55-250mm IS lenses. Metz seems to be one of the brands easily available in India (beside the OEM flashes). I'm considering the Metz 36 AF-5, 44 AF-1 and 50 AF-1, which seem to be considerably cheaper than their Canon counterparts.
Update: I got the Metz 44 AF-1, as it supports TTL (proper implementation & not reverse engineered, so should be more reliable than other brands) plus manual controls. It has a built in diffuser & reflector, and the head can be rotated & swivelled. It's cheaper than the Canon 430 Ex II as well.
I also got the On-Camera Flash Techniques for Digital Wedding and Portrait Photography by Neil van Niekerk, after going through quite a few of his blog posts on flash photography. I found his articles to be a better starting point (particularly for on-camera flash) than the Strobist.