This is the frustration with renting. Its worse when you have a group of family and friends with you and you find the plane you hired is not there, or is half an hour away, or it's got 0.8 hours left before the next 50, or something doesnt work, and so on.
I am not saying it's not without it's own hassles (particuarly costs), but getting a share in something is the way to go, if thats possible for you. You know the aircraft, you know what works and what doesnt, you know where it is, you can probably use it whenever you want, flexibility of time is on your side, you know the last person left it in a good state......