Bidding for upgrade

Hi,
Apologies if this has been discussed before, I have been filling in my API and had a look at the upgrade section in my booking and as you probably all know there is the option to bid for an upgrade. I am currently in UC going out but EC coming home but would like to experience PE on the return.
So my questions are: is PE worth a bid and does anyone have an thoughts on how much a PE upgrade is worth (I know there're many moving parts to the last question).
For example a bid of £225 is rated as good, while £180-220 is fair. I think i'd be happy paying 225 for an upgrade especially as it is an 11 hour flight.
Also and as a side note, are the PE seats ok for tall people, my OH is 6'3. We are currently in the bubble in the exit row in economy. Should we just stay there or place a bid?
Thanks
Mark
Apologies if this has been discussed before, I have been filling in my API and had a look at the upgrade section in my booking and as you probably all know there is the option to bid for an upgrade. I am currently in UC going out but EC coming home but would like to experience PE on the return.
So my questions are: is PE worth a bid and does anyone have an thoughts on how much a PE upgrade is worth (I know there're many moving parts to the last question).
For example a bid of £225 is rated as good, while £180-220 is fair. I think i'd be happy paying 225 for an upgrade especially as it is an 11 hour flight.
Also and as a side note, are the PE seats ok for tall people, my OH is 6'3. We are currently in the bubble in the exit row in economy. Should we just stay there or place a bid?
Thanks
Mark