Hi, I'm thinking about purchasing a mini velo for city to city use. I've been looking around the forums about mercier nano upgrades but some have mentioned that the cost of upgrading could become pricey, I'm also a bike newbie... should I go with the soma mini velo instead? Given that the some online stores sell them 750$.. I've also looked at the citta but it's just not my thing.. I'd appreciate any input, thank you!