Paula,
Things to consider.
Who fixes it when it goes wrong , Prochem is the nearest to you , Ashbys and Alltec both within reasonable driving distance.
There are portables and not so portables , the weight is important , particularly to a member of the fairer sex.
Go for the highest spec portable you can realistically move/lift .
Look at number of vacs , size of pump, heater, weight, price.
Cheers,
Doug