Bluetooth receivers


I am considering a bluetooth receiver, either a Musical Fidelity V90-BLU or Audioengine B1. Any thoughts on these units? I am going to use it primarily for internet radio and Spotify free. At this point I do not have a stand alone DAC nor am I in the market for one. It is my understanding both of these units have a DAC in them which would need to be good enough for now. Maybe I will invest in a better DAC in the future.
valinar
Maybe this post isn't too late to help - I also own the Audioengine B1, GREAT little device.   Has a fine dac inside, works beautifully, trouble-free.   I started a thread about it last year, how you could add a B1 to any integrated amp (even an old one), any pair of speakers, and be finished.  You could then stream 25 million songs from your iPhone/iPad, wirelessly from your couch, to the B1 which feeds the integrated + speakers and have a lifetime of music at your fingertips with a very simple system and very few components.  It wouldn't be high-resolution, or pass "audiophile" muster (I say that with a touch of humor), but if you love to spend time listening to 70s glam-rock, or 80s hair-metal, or just filling a room with music for social events, who cares.   Just the fact that all you need, to get all the music on Spotify off of your iPhone and playing through any old stereo through any old speakers, is a $180 Bluetooth receiver like the B1 is really cool and really uncomplicated.   
I just ordered a Yamaha YBA-11 Bluetooth receiver,  it's about as basic as you can get......single coax output , powered by a USB jack, push button pairing.  I'll be using it with my NAD M51 dac.  I'm just looking for a cost effective way to stream from my tablet,  worth a shot for $50.  I'll report back once I play around with it.