Having recently taken up road riding after 15 years on mTB's- Keep the current bikes and get a road bike. Road bikes work better on the road than any MTB. No matter how much you adapt them.
I still say keep the bikes you have as it takes along time to get Offroading out of the system So keep the specialised. And Keep the Univega to remind you never to get one again. Wreck it by using it as a beater bike- loaning it out to friends- or just give it away.
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How long was I in the army? Five foot seven.
Spike Milligan