I own an '01S and have owned a '99 base and to me as a daily driver there is no difference. I'd even prefer the smaller HP as I can put my foot deeper into it before I have to lift for speed limits, traffic, etc. Even the 201HP '99 had 2x the HP of any of my 3 prior sports cars (Alfa/Alfa/914) from the '60s/'70s.
On the track, I'd have to focus on me the driver and getting the right line and not rely on HP to buy me time. So I'd emerge a better driver.
And I'd rather have the '05 base even though I've owned a wonderful '986 '01S model for 5+ years. Not enough to pay the extra for it from trading my flawless car but enough that, if I were buying and if there was a $3k difference, I'd go for it.
But there are really no bad choices between the two. Be glad you have the choice.