Bokkus, your speakers have a very high sensitivity, so a high quality 50w/ch amplifier will be capable of concert level volume in a large room. Any additional wattage will not be necessary. Given the same price point, a lower wattage amp will likely be better quality than a higher wattage one. If you have no plans to change speakers, or a change would be to another high sensitivity speaker, I would be looking for a high quality lower wattage amp. Also, I wouldn't be overly concerned with it having a phono input, as you can always add a separate phono stage which will likely be small in your price range and could be placed out of sight, and possibly better than built-in, but definitely not worse.
You might try posting another thread in the "Amps Preamps" section. This will likely give you better information than "Home Theater" since you are looking for a 2 channel integrated. Something like, Recommendation for quality ~50 watt integrated amp. Then in the body of the thread, state budget, color black, speakers, source, etc.
IMHO, the Musical Fidelity M3i would be an excellent choice for your situation, although it has a silver knob, and a separate phono stage is needed.