What would you suggest about between 500 - 600 Euro? (Hybrid or valve amp)
This one's very good:
http://www.musicstore.de/is-bin/INT...yID=6LzVqHzlhAgAAAEVcxxWf70R&JumpTo=OfferList
They're a trademark of music-store, cologne , but this amp is produced by Laboga in Pologne. You can read Reviews of the Head "Studio Reverb" on harmony-central:
http://reviews.harmony-central.com/reviews/Guitar+Amp/product/Laboga/Studio+Reverb+Head/10/1
I own the head myself. It's a good rock amp, the "clean"-channel is distorting easy. But if you crank the Master-Volume all the way and just the channel volumes for adjusting, you can get a very nice, fat cleansound (not fender-like, but very nice, imho) loud enough for a rock band.
The Gain-channel has enough Gain for Rock/Hardrock. I was very satisfied putting an overdrive in front of it (Digitech Bad Monkey, Ibanez TS-5 or TS-7, you get them for a snmall amount, new [Bad Monkey] or 2.nd hand [TS-5 or TS-7]).
This is much more am amp to be happy for a long time.
It's not a 4-channel-midi-monster, but what it does, it does very good.
Since there is a 30-days-give-back-guarantee, you have no risk to order it and try it out.
But i agree with slashjuenger, that the Laney VH100R or the Combo VC 100 or 50 R, bought second hand, would even be better.
But i surely can understand if you don't like to buy second hand if you don't speak the language of the country you are actually - the risk of getting cheated might be higher.
So if you want to play rock / hardrock / oldschool metal, the Fame Studio 84 Combo would be a good deal.
If you can afford 700,- you could also buy the "Studio Reverb Head"
http://www.musicstore.de/is-bin/INT...yID=vMfVqHzlugwAAAEVGx1Wf70R&JumpTo=OfferList
and this cabinet:
https://www.thomann.de/de/harley_benton_g212_vintage.htm
Good luck and much success!
EDIT: I just saw that the "Studio Reverb Head" was already mentioned above - i was to slow...