http://theknobbery.com/cabinet-hardware-sizing-guide

Six inch on all drawers and doors except for the large drawers. Would use one 8" centered on drawer. I am advising that because of having just redoing my small kitchen. Was going to put two small pulls on big drawers, but a professional cabinet guy advised to use the larger handle; he said that normally when people are opening a drawer with two pulls, they will use only one pull because they have something in one hand and can't use both hands. He advised that this type opening with one hand would eventually cause a "warp" in the drawer. So your husband is right about that. I considered using knobs, but decided I like the look of all pulls the best. Pulls on doors are in vertical position, pulls on drawers are in horizontal position. It really looks good. Would post a pic, but the kitchen is still in a mess.

tsjmjh I am going to have to get someone to put the pulls on and I had figured out that they had to go on prior to the panel being installed. I guess I don't know where the little bit of space is for the screws until I get my appliances. I was thinking they need to be countersunk so the panel can be flat against the dw. Do all dishwashers have a space for the screws? My appliance installer said they would put the panels on for me but they will not put the pulls on the panels. So I need to get someone to do that. I don't have a cabinet person because I already had the cabinets and got the panels for the dish drawers to match the cabinets. I live in a very old house and I was installing a custom range hood to house venting over my new stove. My house has never had a vent over the stove at all but I am getting a dual fuel stove and figured with the higher BTU output of the burners I needed to get ventilation. So this is sort of an upgrade to my kitchen mostly surrounding appliances and what goes with them. It has been quite a process because of all the things you don't see that cost money (new Electrical Panel, different plugs, moving the gas line over 6 inches, etc). But it is almost complete. nidnay I think my panels should be fine. They were sprayed with an oil based paint and so I am not going to worry about doing anything more to them. But I do need to figure out how to get the pulls on there correctly so the panel will fit flush. I took your advice and got the regular pulls to match my other drawer pulls and they are 8 inches center to center. I think that is plenty big plus since I need two of them I wasn't going to spend several hundred dollars on the "appliance pulls" if the others will work just fine. You have been in on this from the beginning. I am almost done. I will post before and after photo once I am finished. I have had many frustrations along the way and every time I think it is almost at the end something will happen. Like the last 2 times the AC guy was supposed to come and cut a hole in my roof for the ducting, we had a downpour of rain so it had to be delayed. Plus the usual issues with people not showing up when they are supposed to, paint not matching, me having to supervise because the person who is supposed to is nowhere to be found, etc. But I can see the end now.

Typically pulls/knobs manufacturers won't make both an 8" and 9" size so you won't likely be able to have both in the same style. Look at the pulls you like and see if they come in either of those two sizes. I usually feel that pull sizes should vary in the kitchen with the size of the drawers, but that is more if the drawers are quite different in widths. Your drawers are not so the pulls can be the same size. A good trick is to make aluminum foil pulls in the sizes you are looking at, and hold them up against the drawers. That will help you see which size works best.