I am looking in building two pico's, but I live in Europe. Apparently, the Alpine SWS 10D2 isn't distributed here, so I would need to get it from US. Including import duties, shipping etc. price is about 230 euro to get 2 here.
The SWR 10D2 is however better available and is currently on sale in the UK, so I can get 2 for 270 euro.
I compared specs and it seems like the SWR is just a better version of the SWS.
sensitivity 82/85 (here the SWS is better I guess because it has less mass)
freq response 26-200 / 28 - 200 (win for SWR)
RMS power 300-1000 / 150 - 500 (win for SWR)
Peak 3000 / 1500
VAS 18 / 25 (here i'm worried, as the box is calculated on this)
Fs 31 / 35 (less chance to break the SWR I guess)
Qts 0,51 / 0,49 (not clear, small diff?)
Xmax 20 / 15 (win for SWR on durability)