u also can use for lazada voucher rm30/50. not necessary spend all. just those point that going to expire

Buying Economy and then doing Business Upgrade is not very attractive with MAS. Flying Business however is the best way to get the most value for your points compared to cash cost of that ticket and for me it is the most fun way to burn miles you acquired for free anyway.

You are best looking are their fixed price Enrich Saver redemption. 100k is one-way in Business to London. 108k is return ticket to Tokyo in Business.

MAS also offer partner redemptions which include OneWorld Airlines plus Emirates.

For 158,000 points you could fly Singapore to Melbourne in Emirates First Class (although this route is being cancelled shortly) which would be pretty fun with chauffeur pick-up although in the winter time this is on the 777 rather than the A380 which is the one with the shower. The cash value of this ticket is RM30k.