As you can see below, i have the SVT-2pro and 4pro. I have gigged both extensively and each one has been my flagship head at one time or another.
I like the 4pro quite a bit for portability and straight up volume. However as you can also see, i supplement the tone with a Sansamp RBI to warm it up or add grind (depending on the gig). The nice thing about the 4pro is it's two power sections. this has been a nice feature when i've wanted to run two 4 ohm cabs (like those GB NeoX 212ts).
The SVT-2pro is a heavy beast. and i have it in the standalone head-style rack mount which i think makes it heavier than a CL. Mine comes in at about 90 lbs. I will say this- when my 2pro gets warmed up, there just isn't anything like it. Power, warmth, b@ll$, the works... I have kind of moved into micro heads as my back has started to age. (you might notice a gk mb-800 lurking around), but i have never regretted the purchases of my 4-pro and 2-pro for an instant. Both of mine are US made if that matters.
Now for the bad, there isn't much, but i still think it's worth noting. My 4-pro has an effects loop that has never worked properly for me- when i use it, i just get a lot of nasty hum, no big deal, i don't use many live effects, and i don't think it's inherent to all 4pros. also, i attempted to bridge the 4pro at various points through the years and i don't know if i did something wrong or if it is conincidence, but i no longer have any output out of channel B. I need to get it repaired, but it is kind of a low priority at the moment. could be a bad speaker out or something worse. at the moment all it does is power that mesa 115 anyway, so it's not a big deal- but again- it might be worth noting.
the 2pro has been a tank other than the normal tube wear and tear that comes with an all tube amp.
Hope that helps.