david....thank you for your product, you very well may have saved my life(or at least given me years).im sure you are working very hard on designs and improvements..i use the 901 and it works very well already. i would like to make a suggestion though... your friend that wrote your first post speaks english very well, and i would highly reccomend that you have him rewrite the instrucion manual, mostly suggesting to help your product be more proffesional looking and may help the product to go more mainstream(if it goes to stores, people may want to see the manual before purchasing). i got the "point" of it, and even found it amusing, but i would say about 10% of it didnt make sense, and near half of it had grammatical errors. just a tip to help your business since you are helping me so much, so please dont think i am speaking poorly of your business..your english is much better than my chinese