Coleman tents (and most other brands) vary in quality based on what you want to spend. They have some really good top end stuff but also make cheapo tents for walmart and dick's, etc. Check out their exponent line.
In general, i would never buy a tent that did not have a full rain fly and aluminum poles regardless of manufacturer.
Alps makes taurus models w/ aluminum poles so i would order aluminum replacements. The Taurus are very good tents and I would highly recommend them to anyone.
The best resource for all tent parts is a company called North Pole. The make about 90% of all the tents manufactured and parts for everything. They have an excellent support staff and you can tell them what you need and they will know what parts fit your tent. Their web site is http://www.northpoleltd.com/
