if your thinking of getting a Spheros and then upgrading it you might as well just go and buy a saragosa to start with
the gosa's are a pimped out spheros and there a great reel
ive got 2 and i love them i have the 5000 and 18000
no need to upgrade any thing they work strait out of the box (the 5000 might need a drag upgrade) i haven't bothered tho