I use also cryptopia for trading many "little" coins.... the interface is good and it's very fast... I've never had a problems with withdravals or deposit until now...
Yes, I can recommend cryptopia too. They really miss a integration into some trading tools, but I thinkt that's because they are still quite small. But except they are obviously somtimes overwhelmed with withdrawal issue (but most of the times they get fixed in less 24h), they are quite good.