After years of using devices that use Sony's MemoryStick format, I've just acquired a smartphone that uses microSD memory cards. Since a card was not included in the box, I need to pick up an 8GB card (the maximum capacity supported).

Are all 8GB microSD cards alike (in other words, no additional format or protocol differences), or do I need to look for additional specifications (the manufacturer's spec is very brief, stating only microSD memory card slot, hot swappable, max. 8 GB).