I love both TimeFactor and Space …. if I HAD to chose between the two then I would personally go for Space…..but that is because I am a reverb nut. ….. but this just me and my opinion….and my requirements…which will probably be different from yours.
They are different beasts. The TF can do a slapback and Space has delays….but I would not say that the TF Slapback is better than space… it isn't…bu it is not designed to be… same with the space delays.
Yes, the TImeFactor accepts MIDI Clock.