My Lampi is a level 5 and uses a 6X5. I have been playing with the Bendix 5852, Sylvania Brown Base 6X5gt and a Zenith 6X5G (small coke bottle shape). The Bendix is very focused, The "G" is very dimensional and the "gt" is in between. At this point, in my system, I am leaning towards the "G". However I have an RCA "G" on it's way. RCA's are generally known for their bold and warm presentation, with good bass. We shall see how it compares.