If you did not call them and they just showed up on your door; I would be very careful. Its kind of like the advice; "never give out your SS# or credit card # to someone on the phone that calls YOU". (as opposed to you calling them). I would be especially careful if they offer you this great deal on an easy payment plan. Read every word of the contract BEFORE you sign it, and its best to tell them you want to think about it or let someone else read the contract/offer and you'll get back w/ them. Then, I would call at least 1 and maybe 2 other siding companies and get estimates from them for comparison to this "great deal". If the great deal is only good while they are there pressuring you; thats a very bad sign. Where is this company based? In your town? Or is this a "national company that is in the area at this time"? You are better off dealing w/ someone that can be hurt by word of mouth than by the better business bureau. Especially when you can show up at their office (as opposed to calling this company or the BBB over and over and over to no avail). And, what about refernces of other satisfied customers in your area? Did you ask for, or they offer, any?? You might also want to call a painting company and see what it would cost to have your house painted instead (especially since you intend to sell soon). I have aluminum siding and have painted it only twice in 20 years. You might be interested to know that while vinyl siding is "maintenance free" It can also be a liability to a potential buyer that doesn't like the color you choose and doesn't want to fork out for new siding. Funny you should mention ADT who is notorious for calling and convincing you that you need an alarm system (right now), when you wasn't even in the market for it until they called. They too have a contract that says in fine print that you promise to pay them (almost twice what alarm monitoring SHOULD cost) for usually 3 years AND that you usually don't really ever OWN your alarm system; you are leasing it. After the 3 years; you have paid them in monthly payments what you could have bought one for outright from an honest dealer (+interest), except now; w/ THAT system you must continue to pay too much for your monitoring for ever and ever. Or, buy the system you should have bought from a local dealer in the first place. I know this because I'm one of those local dealers that have heard horror story after horror story from people wanting me to service their ADT system that they can't get serviced by ADT or help them get out of their contract. I call companies like ADT "MONITORING" companies not "ALARM" companies. (they just use alarm systems to get your name on a contract that pays them money every month). I watched a local news show that investigated a "siding company" that turned out to be a "home improvement finance company" (and at loan shark rates). And, I don't consider 3 complaints in 10 years w/ the BBB all that good. Why is it that it got so bad that the unsatisfied customer had to call the BBB to get the matter resolved? My company has been in business for 30 years and NEVER had a complaint (resolved or otherwise) to the BBB. AND, we don't call customers to sell our system. THEY CALL US (when THEY want one) usually referred by other satisfied cutomers. And, sometimes I'll bid a job and get called a year or more later to install it. Because my deal is good ANYTIME not just when its convenient for the seller. Now, I realize that they told you they want to use your house to sell other jobs in the area by putting their sign up in your yard. But, please realize that honest, local, siding dealers use their past siding jobs to get other customers too (they are called REFERENCES). Alarm "MONITORING" companies use the sign tactic too. One in particular is called "Protect America". They pretty much operate the same as ADT except they use the "bait and switch" method to get in the door and you wind up paying more up front than ADT for a so- called "better" system. Either way, you wind up paying too much in the long run. I know there are lots and lots of happy ADT customers nationwide. But, its like the "rent to own" stores. Its easier to finace now, but you pay more in the end. And, If you plan to sell soon; you will definately want to make sure that you don't wind up w/ a lien against your house on any financing deal by this siding company. GOOD LUCK!