Hi Humpty,
With UB, BoI, and EBS the LTV is no longer relevant for their most competitive fixed rates.
PTSB are only competitive with mortgages over 250k, AIB have best variable but they're not keeping up with competition pricewise.
UB allow overpayments of 10% of balance each year. BOI let you increase monthly repayment by 10%.
Your choice is really between UB 2 years at 2.3%, 4 years at 2.6%, or with BoI any term up to 5 years at 3%. If you have a current account with BoI and stay 5 years, there's 3% cash back which brings your effective rate down to 2.4%.
UB give a flat cashback of 1500.
If you want certainty longer term, BoI and KBC offer competitive 10 year fixed, and Ulster over 7 years.