If you're only going to do a couple of hundred hours, you'll find that renting will end up costing you about the same as buying. Once all the legal fees, interest, inspection, hangar fees, de-icing, pre-heating, insurance, not to mention any unforseen maintenance are taken into account you'll find that your hourly rate will be very close to what it is to rent. A friend has had a couple of aircraft, and now rents because of this. I think his hourly rate ended up being about $200 for a Musketeer & a Cherokee. Despite pre-purchase inspections, a premature engine change on one, and avionics problems with the other, caused his costs to go way up. If however you plan on using the a/c for at least 300 hours per year, then buying starts to be less expensive.
Renting's benefits are that you don't have to deal with the insurance, maintenance, storage, cleaning, registering it, etc. You don't have the convenience of taking it whenever you want, and it isn't yours.
Owning is much more convenient. After all you can go out to the airport, untie it, and go flying when you want. Not when there is a free hour. You can also fly for as long, or short as you want. Mind you digging it out of a snowbank after a snowstorm isn't a whole lot of fun.
As Gannet mentions, spend the money on a good pre-purchase inspection. It's more than worth the cash. Talk to AMEs about the types you're interested in about potential maintenance problems, Airworthiness Directives, Service Bulletins, and general maintenance issues. If this seems a little daunting, well it is a major purchase, you could always see if their is another person in the area, who is looking to build hours, and go halves ??
Cheers