Just bought two HP33s'. It seems like a pretty nice calculator so far.
Compared to the 49g+, I'm very glad that I can fire off strings of numbers w/o missing any. IRT the complaints about how 26 LBLs' won't stretch to 31k, but...I'll use it to organize equation sets, for example:
X-SECT PROP
i-beam(wide)
i=w*(d^3)/....
circ tube
i=pi*(sq(b)-sq....
BEAM DEFLECT
pt load at a
d=pl^3/(3EI)
and so on..
Also, I was unaware that branching, conditional programming structures were supported. Size of case is ok as well.