I previously owned a 1X15 Hartke XL Cabinet, a 4.5 Hartke XL Cabinet, and the tweeter bank they used to make but don't anymore. I also had a Hartke 7000 amp. It was great stuff - very tight sound, lots of tones, simple controls, and it was biampable with a built in cross over and two power amps. However, I sold it all and bought an Ampeg SVTIV Pro Head, and Ampeg BXT cabinets (1X15 with tweeter and 4X10 with tweeter). Why? I test drove the Ampegs at a Guitar Center, and just loved the sound - tight, yet warm, and the mid roll off on the tone controls is awesome, particularly if you use different instruments from different manufacturers (I own Fenders, Gibsons, a Rickenbacker, a MusicMan, and my Alembics). Plus, it had 490 watts at 4 ohms versus about 250 for the Hartke at the same load. I never had a problem with the Hartke's though. Anyone buying them will get a great amp setup IMO.
Congrats on your rig, Eugen!
Regards,
Alan