On the bass side I have heard they are decent I have no experience so I won't comment but I'll venture to say they are most likely decent now speaking from experience I have tried many Orange Crush amps....They are lest then decent they have absolutely no similarity to any other Orange amp other then the fact that they are Orange...The tone was to put it frankly ####, I've heard Marshall MG's that sounded better then the Crush series, they seem Way overpriced for what they have to offer, and the micro Crush is just horrid for 55 dollars you could get a much better 1 watt amp both of Fenders are amazing great (Tonemaster and Mini Twin I got both and love them).
So in short I never recommend Orange's Crush series the 15R sounds very dull and lifeless to me which is what an Orange SHOULD NOT SOUND LIKE!!!! The reason I love Oranges is because they are so lush and vibrant. In short I'd save the 120 or whatever and wait till u can buy a vox Valvetronix or something. If you really want a desktop amp then I'd say check out the Fender Mini Twin or Tone Master.
--Disclaimer--
--This is the only time you will hear me say Orange amp's are not worth it, I don't even consider Crush to be Orange amps more like Chinese/Korean OWANGE amps--