DO you think the high end would perform better with Lion OSx or worth more when selling back?
Doubt it to be honest, you may get a little extra when selling it but that all depends on when you sold it.
What do you currently have?
Take the i5. Invest the 300 Euro/Dollar difference in either 8GB RAM or SSD, that will be significantly more noticeable compared to i7.
Also, the i7 machine will probably run hotter, which is never good.
Thanks! I will probably order a i5!!! Do you think that parallel desktop will perform much better with the i7 than i5???