Hi
1) Both legs are almost certainly will be on an A321. Currently two based
at BHX, one on schedule and the other charter (Cosmos, Avro etc).
From 1/5/06 a third 321 arrives also for schedule. The Malaga was
replaced for a few days last year with a 320 and 757's have subbed
on the IT aircraft.
2) One of the few BHX based carriers I have never flown on but family
& friends have said they are fine. Otherwise go to
www.airliners.net
click on Forum then aviation discussions, then trip reports and put
Monarch in to the search engine. The most recent for 321 was July 05
unless I have missed some.
3) Some seats have been taken out of the 321 and the extra legroom
ones are sold as an extra. Otherwise they are fairly similar to to any
other LCC or Charter operator. If you want extra legroom you will have
to pay or so I believe.
4) ZB at BHX seem fairly reliable although there was a delay the other
day (I don't know why). Your aircraft on Monday should be a
nightstopper (probably the Sunday Tenerife) and you will be unlucky
to pick up a delay (hope that last comment is not a jinx).
OltonPete