Zanon, OP may not have an comparative context for the price - simply listening to the combo, and if a beginner, he won't be able to assess how good they are versus other options in the price range. I think they are much better than "decent" for the price - some might argue they are the best sub $1000 speaker with any semblance of full-range bass. Might be one of the first choices I would pick for a non-audiophile that wants a good, full range-speaker (with an NAD or Rotel 100 watter) and then wants to stop thinking about audio and the next upgrade.
The MC30 is a wonderful amp (good enough to look for a speaker that is likely to mate well with it), that may have just enough power, but my sense is that Vandersteen in general really needs SS or a very high power tube amp to deal with the large impedance swings and low impedance (2 ohms or so?) in the bass - not to say you won't like it, but you might not know what the 1s are capable of without trying them 100 watts and high current output. Personally, I think your amp deserves a better and better matching speaker (though the VS is very good for the money), the MC30s are first rate, with a little maintenance (cleaning, capacitor replacements, etc) they should last you a long time. Let us know if you ever think of selling them. One of the great vintage amps!! Really in another overall league than the VS1s IMHO.
The MC30 is a wonderful amp (good enough to look for a speaker that is likely to mate well with it), that may have just enough power, but my sense is that Vandersteen in general really needs SS or a very high power tube amp to deal with the large impedance swings and low impedance (2 ohms or so?) in the bass - not to say you won't like it, but you might not know what the 1s are capable of without trying them 100 watts and high current output. Personally, I think your amp deserves a better and better matching speaker (though the VS is very good for the money), the MC30s are first rate, with a little maintenance (cleaning, capacitor replacements, etc) they should last you a long time. Let us know if you ever think of selling them. One of the great vintage amps!! Really in another overall league than the VS1s IMHO.