jolida 202 or 302?

I'm considering either the jolida 202 or 302 amp (which, by the way, easily beat all the ss I've tried in the price range). I've heard only the 302 and a modified 202 (by underwoodwally - top notch, highly recommended). Reportedly the stock 202 and 302 sound very similar. True? If so, why would anyone spend the extra $ for the 302? There's only 10W difference (40 for the 202 and 50 for the 302) which is hardly audible. THe 302 has balance control, but it costs almost $150 extra. Is there something I'm missing? (I do have quite inefficient speakers, but I don't listen very loud, have hardwood floors, smallish room - and besides, 10 watts difference?)