Until you put a Slo 100 or 30 (dialed in) next to a 5150 or 6505 ect, but don't if it's out of reach $ wise. Not being a snob at all here, I am blessed to have a little play cash to be able to sample a lot of amps over the past 5 years.
All I can say is the discerning ear will hear the difference
Gain structure will be way more articulate and refined in a BE, a Bogner or Slo or my current fav the 3rd power Kitchen sink. Cheaper amps have a ton of compressed gain that borders fizz and if that's all you know and hear you will love it, same with a modeler.
Until you A/B them you will never know. Lastly, agree with everyone else, if your happy rock on!