Bong Recomendations?

So I've decided I'm going for a bong to smoke my salvia, question is what to get. I going to buy once so money isn't a huge issue; it is what it is. Function is at the top of the list; if has asthetics that's cool too, but i'm putting my money towards quality performance. It has to be all glass; none of that rubber shit. Pyrex is a must, also known as Borosilicate glass. I'd like it to be around 17 in/45 cm tall. The thickness I feel should be around 3.2-5mm, If you got a recommendation state it. I definately want to invest in a diffuser. I'm playing with the idea of ice notches and/or a percolator. I'm not sure whether or not I want the perc inside or outside. Seems like it would be a hassel to clean if its inside and I'm not sure how durable the internal ones are. What if an ice chunk slipped through, bad news? Outside ones are in the way; they look like they could just break off. So the last couple of things I havn't an idea about is joint size and bowl size. No idea what look for joint size 10mm, 14.5mm, 18.8mm? I'm mostly smoking leaf some extract medium or small bowl? I like ROOR, but are they worth it?

So what are your opinions, brands, specific bongs? Anything I overlooked? Thanks much for any input; I know it's a tall order and you've certainly invested your time in reading this. Much Thanks