Find yourself an used BCD396T (handheld) or BCD996T (base/mobile) - both will do the job, has milair coverage (unlike the Pro 96/2096) and has extensive software support - even freeware, plus online help guides and FAQs (much of which is linked in our wiki, incidentally). The digital audio recovery is better on the Uniden XT and GRE models, though - if I were starting new, it would be something to consider. I use the 396 when traveling up to visit my family in NJ.
I don't know if the much older BC296 (handheld)/796 (base) would work on the Delaware system very well - I'll let Delaware scannists comment on that. Both of these have a lot of support as well. Do NOT get the BC250/785 - these will not support rebanding, which last I heard, Delaware will need to undergo at some point. 73 Mike