A few truths A rubber tube will always break at the worst time , you cannot get a plastic peep with a big enough hole to work in low light . Always get a peep with the biggest hole possible for hunting , only target archers need the smaller sizes for scope ring alingment , you need all the light you can get . use a high quality string and do not worry about peep alignment until you put 200-300 arrows down range. Use a string loop and have it made as short as possible , combine that with a newer style hook release and you will gain up to an inch of draw length = more speed . the new hook releases are easier to establish an anchor point in the corner of your mouth=consistent shot to shot accuracy . The corner of the mouth anchor usually results in the string touching your nose which is also a help in establishing a consistent anchor point . All of these lead to good practice habits , fundamental to consistent accuracy . Personnelly i have always liked Tru-peeps ,they have been around for a long time and build a good product . While on the subject of new strings I always shoot in my factory string , set it up with a loop and peep pull it off the bow and hook the ends together so it stays set , put in the same bag my new string came in and you have a spare all setup and ready to shoot so you don't have a spoiled hunt .