Selecting the best glass bong for your needs depends on various factors, including your budget, preferences, and desired features. Here are some of the top glass bong brands and models as of my last knowledge update in September 2021. Keep in mind that the availability and popularity of specific products may have changed since then, so it's a good idea to check the latest reviews and options.

GRAV Labs - GRAV Labs is known for its high-quality glassware. Their bongs are well-crafted and come in various styles and sizes.

ROOR - ROOR is a renowned brand that has been producing top-tier glass bongs for years online head shop. They are known for their precision craftsmanship.

Illadelph - Illadelph glass bongs are known for their innovative designs and high-quality materials. They are often on the higher end of the price range.

Pulse Glass - Pulse Glass bongs are praised for their stunning designs and smooth hits. They offer a wide range of styles and perc options.

HVY Glass - HVY Glass produces thick and durable glass bongs. They are a great choice if you're looking for a sturdy option.

Grav Labs - Stax - Grav Labs offers a modular bong system called Stax, which allows you to customize your bong by stacking different components together.

Empire Glassworks - Empire Glassworks is known for its artistic and handcrafted glass bongs, featuring unique designs like animals and fantasy themes.

MJ Arsenal - If you're looking for something more compact and portable, MJ Arsenal offers mini rigs and bubblers that are designed for smoother, flavor-packed hits.

Zob Glass - Zob Glass creates sturdy and functional bongs with various percolator options for improved filtration and cooling.

Snoop Dogg Pounds - Snoop Dogg's line of glass bongs offers a variety of styles and designs, often inspired by the rapper's persona.

When choosing a glass bong, consider factors like size, percolation method (e.g., tree, honeycomb, or showerhead percs), ice pinch for cooling, and budget. Additionally, it's essential to prioritize safety by selecting a bong made from high-quality borosilicate glass, which is less likely to break under heat stress.

Always buy from reputable headshops or online retailers to ensure you're getting an authentic product. Additionally, make sure to clean and maintain your glass bong regularly to ensure the best smoking experience and longevity of your investment.