I have looked at the different types of filters available and my options. I really plan on shooting landscapes this summer as much as I can to improve my skills and I am looking to get a circular polarizing filter and a neutral density filter. Now I live on the farm in Rural alberta and closest city is an hour and a half away. I will be heading there this weekend but looking at the stores prices compared to say Amazon, Adorama and B&H they are much higher. If someone could give me a couple tips or comments on these filters I would really appreciate it. The last questions I have is I have seen the 4x6 cokin/lee filters and have also seen the circular neutral density filters. Is it bad to go circular. just thinking it might be easier and cheaper. These are a couple I have seen on B&H. B+W | 67mm #102 Neutral Density (ND) 0.6 | 66-012188 | B&H Photo B+W | 67mm Circular Polarizer Filter | 66-044842 | B&H Photo from amazon: [ame=http://www.amazon.com/67mm-Neutral-Density-Glass-Filter/dp/B0000BZL8D/ref=sr_1_12?ie=UTF8&s=electronics&qid=1276717557&sr=8-12]Amazon.com: B + W 67mm #102 Neutral Density Glass Filter - 0.6 - 4X: Electronics[/ame] although i might have to route this twice from canada. I would love to stay around 150/200 if I can. I know good filters will last a long time but I would love to save some money if possible.