hi... let me just say that i have been noogling since june... i started out with the medium domes, and upgraded into the large ones by the middle of july... i still havenot filled the large ones, and i have been irregularly noogling with tthe large domes for about a month now!!!

there is still about a third of the dome left to fill...
anyways, it's alright if you decide to buy the large ones... because you're definitely going to use them in the future... it's upto you as to when you are plan to upgrade into large domes... i did not totally fill the medium domes when i decided to buy the large cups... there was still about 1/8th of the dome left to fill... but i noticed that i was not swelling any more, thus i decided to go ahead and buy the large ones... oh and by the way, one factor wherein you would know that you are ready to upgrade is if within a few seconds of your first pump, then you reach the maximum amount of swelling that you have.. like example, the medium cups have upto 2.5 inch mark , if let's say you reach the 2.5 mark within a few seconds of your pumping, then you are ready to go and upgrade... oh and it should happen for like a few days or about a week... did i explain myself clearly??? or did i just confuse you???
now, when i changed into hte large domes, it was a bit difficult for me... when i started i could not bear the pain on the ribs.. then lucy sent me the foam rings (bless her) then unfortunately, i couldn't feel the tug with the foam rings on, thus i bruised my boobies badly... ( i had to stop noogling for about 2 weeks)..
anyways so what i did was, i prepumped with the medium domes to get my maximum swelling ( i pumped for about 5 -10 mins) then i switched the domes to large ones... and guess what.. the domes sucked good.. at first i could only pump until my nipples reached the 2 inch mark, and now i can pump until my nipples reach the 3 inch mark... and after a few days i found out that i could pump without the need for prepumping with the mediums... htat i could just as easily pump with the large ones...
now i can snoogle, i can lift some weights, do some chores within my room even with the large ones on...

sorry, i didn't mean to preach... just wanted to share with you what i had experienced when upgrading domes... just please bear in mind that nooogling is a trial and error process.. it varies with everybody... hope i answered your query...