I'm assuming you combined the top if the stock inbox bottle with a silicone back then? hcigar just released Inbox styled bottles. I hear good things, my Inbox is long gone.I'm not a big fan of the silicone bottles... I like the YFTK super softs. No leaks and enough backbone to suck excess juice out quickly. I got lucky.....those silicone jobs were $25 apiece back when I tried em. The ones I like now are about $6 for 10.
I didn't and don't care much for plastic. Have silicone for both my Therion & Pulse, prefer them. Just preference.