Chastity and orgasm denial discussion

Hi, We are trying to work out the best solution for our situation which is that we are often long distance for a couple of weeks at a time. We currently use a CB6k but would like to change to something else more suited for longer wear. A key part of this is the cleaning aspect, at the moment realistically it needs to be taken off every couple of days for a good clean but KH would prefer something that does not need frequent removal (best case no removal at all). On the other hand we find hygene is a very important part of the chastity. Does anyone have any experience or recommendations about a good device that would fit the bill? We are looking to invest in a good device for us and so the main thing would be that it is comfortable for longer term wear and does not need removing often for cleaning.