I have a straight tube about 2 feet tall and i was wondering if these would be good attachments. I already have an ashcatcher ,bowl and diffused downstem but i want to get better quality pieces because because i know my bong could be hitting way smoother and less drag so please tell me what you think about these and help me decide: this downstem Black Leaf - Glass Bong Adapter - 4-Arm Diffuser - Grasscity.com or this downstem Weed Star - Honeycomb 6-arm Diffuser Downstem - Grasscity.com this ashcatcher Weed Star - Lil' 4-arm Tree Perc Precooler - Blue or Green - Vaporizers - Grasscity.com or this aschatcher Weed Star - Circ Perc Precooler 18.8mm - Bongs & Waterpipes - Smoking Pipes - Grasscity.com this bowl Black Leaf - Glass Slide Bowl - Built-in Glass Screen - Glass Bongs - Bongs & Waterpipes - Smoking Pipes - Grasscity.com or this bowl EHLE. Glass - Small Cylindrical Bowl - Bongs & Waterpipes - Smoking Pipes - Grasscity.com