If I remember George correctly, the size 9 corks are usually used with 750 bottles, the size 8's with 375 bottles, and the size 7 corks with the 187 bottles.
I have the $16 double lever corker, and have had NO TROUBLE with it. No broken bottles, no creased corks, no spilled wine in three years. I actually managed, with the help of my 20 year old son, to get the FVW agglomerate #9 corks almost all the way into the 187 bottles before George told me that the corks come in sizes. I really don't have the budget or room for a floor corker at this time. I am keeping my obsession, I mean hobby, under control with only four carboys, three gallon each. The seven one gallon jugs I use to test new recipes don't count. That said, I am not bottling the amounts at once that you others are. I don't break a sweat bottling 15 or twenty in a day.
Only drawback to limiting my number of carboys is I can't bulk age for a year, and I have to wait to start the next batch of mead or (previously frozen) fruit wine until I have bottled what is working now. I want to try another batch of prickly pear this fall.
still working on the color. Start with red juice and end with white wine.
I have 2 of my carboys are in use for the Castel de Pape kit, and the other two have port style Mexican Plum. Will have to have at least one of them ready to bottle by October to start the cactus wine. Then the next empty carboys will be an experiemental carmel apple, and another batch of spiced mead. YUM