Decent multimeters are hundreds of dollars (like Fluke). You probably don't need something that good. I bought mine at Canadian Tire, I don't even know the brand, probably the store brand. Unless you need super precision and reliability, a cheap one should be sufficient.
I had a cheapo one, it was $20. It broke after a year. I bought another one, slightly more expensive at $30 on sale, and it has been great. All features are going to be similar, measure AC and DC, voltage, current, resistance. I think my new one has a thermocouple attachment.
The best feature IMHO is autoranging, it saves you a lot of time switching the dials to find the correct range. My first one didn't have it, the second did -- try and get one with it. The device is a lot less cluttered with autoranging as well, not as many dials and knobs.