What if Chain Reaction is your local bike shop? I'm about 800 yards from their Doagh Warehouse and have found them on the vast majority of times very good. Good for the wee things, haven't bought a bike from them yet.
I must though give praise where it's due for McConvey Cycles. I was at the Ciclovia event yesterday and McConveys had a mechanic at the event. The guy spent a good 15 minutes tinkering with my bike, getting my gears and brakes sorted out in the process all for free!
I've heard good and bad things about McConveys, I guess it's like any shop. To be honest, I just don't have time to be running around bike shops hoping to find something which might do. The last LBS I walked into to make enquiries said "there they are, the prices are on them. Pick the one you want...." when I introduced myself as new and seeking advice. Shop was in Co Armgah but I won't embarass them by naming them.
I have ordered a few smaller items and helmets from CRC and always found them quick to deliver and well priced.