Your chances of winning are pretty much equal for both types of these machines. Video slots play the same, but they may have up to 7 reels, each representing three rows of five symbols.
Matching these symbols in certain combinations leads to a winning payout. A reel-spinning slot machine typically features 3 or 5 reels/cylinders with symbols and blanks printed on them. These are essentially the same style of machine, but one is digital and one is not. Choose between reel-spinning or video slots based on your preference.